diff --git a/include/cpuinfo_aarch64.h b/include/cpuinfo_aarch64.h
index b8826ed..b9c2844 100644
--- a/include/cpuinfo_aarch64.h
+++ b/include/cpuinfo_aarch64.h
@@ -20,13 +20,13 @@
 CPU_FEATURES_START_CPP_NAMESPACE
 
 typedef struct {
-  int fp : 1;     // Floating-point.
-  int asimd : 1;  // Advanced SIMD.
-  int aes : 1;    // Hardware-accelerated Advanced Encryption Standard.
-  int pmull : 1;  // Polynomial multiply long.
-  int sha1 : 1;   // Hardware-accelerated SHA1.
-  int sha2 : 1;   // Hardware-accelerated SHA2-256.
-  int crc32 : 1;  // Hardware-accelerated CRC-32.
+  unsigned int fp : 1;     // Floating-point.
+  unsigned int asimd : 1;  // Advanced SIMD.
+  unsigned int aes : 1;    // Hardware-accelerated Advanced Encryption Standard.
+  unsigned int pmull : 1;  // Polynomial multiply long.
+  unsigned int sha1 : 1;   // Hardware-accelerated SHA1.
+  unsigned int sha2 : 1;   // Hardware-accelerated SHA2-256.
+  unsigned int crc32 : 1;  // Hardware-accelerated CRC-32.
 
   // Make sure to update Aarch64FeaturesEnum below if you add a field here.
 } Aarch64Features;
diff --git a/include/cpuinfo_arm.h b/include/cpuinfo_arm.h
index 7a94bb0..ca08381 100644
--- a/include/cpuinfo_arm.h
+++ b/include/cpuinfo_arm.h
@@ -20,19 +20,19 @@
 CPU_FEATURES_START_CPP_NAMESPACE
 
 typedef struct {
-  int vfp : 1;       // Vector Floating Point.
-  int iwmmxt : 1;    // Intel Wireless MMX Technology.
-  int neon : 1;      // Advanced SIMD.
-  int vfpv3 : 1;     // VFP version 3
-  int vfpv3d16 : 1;  // VFP version 3 with 16 D-registers
-  int vfpv4 : 1;     // VFP version 4 with fast context switching
-  int idiva : 1;     // SDIV and UDIV hardware division in ARM mode.
-  int idivt : 1;     // SDIV and UDIV hardware division in Thumb mode.
-  int aes : 1;       // Hardware-accelerated Advanced Encryption Standard.
-  int pmull : 1;     // Polynomial multiply long.
-  int sha1 : 1;      // Hardware-accelerated SHA1.
-  int sha2 : 1;      // Hardware-accelerated SHA2-256.
-  int crc32 : 1;     // Hardware-accelerated CRC-32.
+  unsigned int vfp : 1;       // Vector Floating Point.
+  unsigned int iwmmxt : 1;    // Intel Wireless MMX Technology.
+  unsigned int neon : 1;      // Advanced SIMD.
+  unsigned int vfpv3 : 1;     // VFP version 3
+  unsigned int vfpv3d16 : 1;  // VFP version 3 with 16 D-registers
+  unsigned int vfpv4 : 1;     // VFP version 4 with fast context switching
+  unsigned int idiva : 1;     // SDIV and UDIV hardware division in ARM mode.
+  unsigned int idivt : 1;     // SDIV and UDIV hardware division in Thumb mode.
+  unsigned int aes : 1;       // Hardware-accelerated Advanced Encryption Standard.
+  unsigned int pmull : 1;     // Polynomial multiply long.
+  unsigned int sha1 : 1;      // Hardware-accelerated SHA1.
+  unsigned int sha2 : 1;      // Hardware-accelerated SHA2-256.
+  unsigned int crc32 : 1;     // Hardware-accelerated CRC-32.
 
   // Make sure to update ArmFeaturesEnum below if you add a field here.
 } ArmFeatures;
diff --git a/include/cpuinfo_mips.h b/include/cpuinfo_mips.h
index 48c23a1..dd31fab 100644
--- a/include/cpuinfo_mips.h
+++ b/include/cpuinfo_mips.h
@@ -20,9 +20,9 @@
 CPU_FEATURES_START_CPP_NAMESPACE
 
 typedef struct {
-  int msa : 1;  // MIPS SIMD Architecture
+  unsigned int msa : 1;  // MIPS SIMD Architecture
                 // https://www.mips.com/products/architectures/ase/simd/
-  int eva : 1;  // Enhanced Virtual Addressing
+  unsigned int eva : 1;  // Enhanced Virtual Addressing
                 // https://www.mips.com/products/architectures/mips64/
 
   // Make sure to update MipsFeaturesEnum below if you add a field here.
diff --git a/include/cpuinfo_ppc.h b/include/cpuinfo_ppc.h
index 654155d..7aa8bc3 100644
--- a/include/cpuinfo_ppc.h
+++ b/include/cpuinfo_ppc.h
@@ -21,47 +21,47 @@
 CPU_FEATURES_START_CPP_NAMESPACE
 
 typedef struct {
-  int ppc32 : 1;
-  int ppc64 : 1;
-  int ppc601 : 1;
-  int altivec : 1;
-  int fpu : 1;
-  int mmu : 1;
-  int mac_4xx : 1;
-  int unifiedcache : 1;
-  int spe : 1;
-  int efpsingle : 1;
-  int efpdouble : 1;
-  int no_tb : 1;
-  int power4 : 1;
-  int power5 : 1;
-  int power5plus : 1;
-  int cell : 1;
-  int booke : 1;
-  int smt : 1;
-  int icachesnoop : 1;
-  int arch205 : 1;
-  int pa6t : 1;
-  int dfp : 1;
-  int power6ext : 1;
-  int arch206 : 1;
-  int vsx : 1;
-  int pseries_perfmon_compat : 1;
-  int truele : 1;
-  int ppcle : 1;
-  int arch207 : 1;
-  int htm : 1;
-  int dscr : 1;
-  int ebb : 1;
-  int isel : 1;
-  int tar : 1;
-  int vcrypto : 1;
-  int htm_nosc : 1;
-  int arch300 : 1;
-  int ieee128 : 1;
-  int darn : 1;
-  int scv : 1;
-  int htm_no_suspend : 1;
+  unsigned int ppc32 : 1;
+  unsigned int ppc64 : 1;
+  unsigned int ppc601 : 1;
+  unsigned int altivec : 1;
+  unsigned int fpu : 1;
+  unsigned int mmu : 1;
+  unsigned int mac_4xx : 1;
+  unsigned int unifiedcache : 1;
+  unsigned int spe : 1;
+  unsigned int efpsingle : 1;
+  unsigned int efpdouble : 1;
+  unsigned int no_tb : 1;
+  unsigned int power4 : 1;
+  unsigned int power5 : 1;
+  unsigned int power5plus : 1;
+  unsigned int cell : 1;
+  unsigned int booke : 1;
+  unsigned int smt : 1;
+  unsigned int icachesnoop : 1;
+  unsigned int arch205 : 1;
+  unsigned int pa6t : 1;
+  unsigned int dfp : 1;
+  unsigned int power6ext : 1;
+  unsigned int arch206 : 1;
+  unsigned int vsx : 1;
+  unsigned int pseries_perfmon_compat : 1;
+  unsigned int truele : 1;
+  unsigned int ppcle : 1;
+  unsigned int arch207 : 1;
+  unsigned int htm : 1;
+  unsigned int dscr : 1;
+  unsigned int ebb : 1;
+  unsigned int isel : 1;
+  unsigned int tar : 1;
+  unsigned int vcrypto : 1;
+  unsigned int htm_nosc : 1;
+  unsigned int arch300 : 1;
+  unsigned int ieee128 : 1;
+  unsigned int darn : 1;
+  unsigned int scv : 1;
+  unsigned int htm_no_suspend : 1;
 
   // Make sure to update PPCFeaturesEnum below if you add a field here.
 } PPCFeatures;
diff --git a/include/cpuinfo_x86.h b/include/cpuinfo_x86.h
index 0123ddb..521d253 100644
--- a/include/cpuinfo_x86.h
+++ b/include/cpuinfo_x86.h
@@ -21,40 +21,40 @@ CPU_FEATURES_START_CPP_NAMESPACE
 
 // See https://en.wikipedia.org/wiki/CPUID for a list of x86 cpu features.
 typedef struct {
-  int aes : 1;
-  int erms : 1;
-  int f16c : 1;
-  int fma3 : 1;
-  int vpclmulqdq : 1;
-  int bmi1 : 1;
-  int bmi2 : 1;
+  unsigned int aes : 1;
+  unsigned int erms : 1;
+  unsigned int f16c : 1;
+  unsigned int fma3 : 1;
+  unsigned int vpclmulqdq : 1;
+  unsigned int bmi1 : 1;
+  unsigned int bmi2 : 1;
 
-  int ssse3 : 1;
-  int sse4_1 : 1;
-  int sse4_2 : 1;
+  unsigned int ssse3 : 1;
+  unsigned int sse4_1 : 1;
+  unsigned int sse4_2 : 1;
 
-  int avx : 1;
-  int avx2 : 1;
+  unsigned int avx : 1;
+  unsigned int avx2 : 1;
 
-  int avx512f : 1;
-  int avx512cd : 1;
-  int avx512er : 1;
-  int avx512pf : 1;
-  int avx512bw : 1;
-  int avx512dq : 1;
-  int avx512vl : 1;
-  int avx512ifma : 1;
-  int avx512vbmi : 1;
-  int avx512vbmi2 : 1;
-  int avx512vnni : 1;
-  int avx512bitalg : 1;
-  int avx512vpopcntdq : 1;
-  int avx512_4vnniw : 1;
-  int avx512_4vbmi2 : 1;
+  unsigned int avx512f : 1;
+  unsigned int avx512cd : 1;
+  unsigned int avx512er : 1;
+  unsigned int avx512pf : 1;
+  unsigned int avx512bw : 1;
+  unsigned int avx512dq : 1;
+  unsigned int avx512vl : 1;
+  unsigned int avx512ifma : 1;
+  unsigned int avx512vbmi : 1;
+  unsigned int avx512vbmi2 : 1;
+  unsigned int avx512vnni : 1;
+  unsigned int avx512bitalg : 1;
+  unsigned int avx512vpopcntdq : 1;
+  unsigned int avx512_4vnniw : 1;
+  unsigned int avx512_4vbmi2 : 1;
 
-  int smx : 1;
-  int sgx : 1;
-  int cx16 : 1;  // aka. CMPXCHG16B
+  unsigned int smx : 1;
+  unsigned int sgx : 1;
+  unsigned int cx16 : 1;  // aka. CMPXCHG16B
 
   // Make sure to update X86FeaturesEnum below if you add a field here.
 } X86Features;