diff --git a/crc-simd.cpp b/crc-simd.cpp
index 85c05a2c..d3034546 100644
--- a/crc-simd.cpp
+++ b/crc-simd.cpp
@@ -81,7 +81,7 @@ bool CPU_TryCRC32_ARMV8()
     }
     return result;
 #else
-#   if defined(__ANDROID__)
+#   if defined(__ANDROID__) && (defined(__aarch64__) || defined(__aarch32__))
     if (android_getCpuFeatures() & ANDROID_CPU_ARM64_FEATURE_CRC32)
 		return true;
     // https://sourceware.org/ml/libc-help/2017-08/msg00012.html
diff --git a/gcm-simd.cpp b/gcm-simd.cpp
index 6438705d..1741def8 100644
--- a/gcm-simd.cpp
+++ b/gcm-simd.cpp
@@ -214,7 +214,7 @@ bool CPU_TryPMULL_ARMV8()
     }
     return result;
 # else
-#   if defined(__ANDROID__)
+#   if defined(__ANDROID__) && (defined(__aarch64__) || defined(__aarch32__))
     if (android_getCpuFeatures() & ANDROID_CPU_ARM64_FEATURE_PMULL)
 		return true;
     // https://sourceware.org/ml/libc-help/2017-08/msg00012.html
diff --git a/rijndael-simd.cpp b/rijndael-simd.cpp
index 269a8047..ca4a25db 100644
--- a/rijndael-simd.cpp
+++ b/rijndael-simd.cpp
@@ -104,7 +104,7 @@ bool CPU_TryAES_ARMV8()
 	}
 	return result;
 # else
-#   if defined(__ANDROID__)
+#   if defined(__ANDROID__) && (defined(__aarch64__) || defined(__aarch32__))
     if (android_getCpuFeatures() & ANDROID_CPU_ARM64_FEATURE_AES)
 		return true;
     // https://sourceware.org/ml/libc-help/2017-08/msg00012.html
@@ -180,7 +180,6 @@ void Rijndael_Enc_ProcessAndXorBlock_ARMV8(const byte *inBlock, const byte *xorB
 	data = vaeseq_u8(data, vld1q_u8(keys+128));
 	data = vaesmcq_u8(data);
 
-	// Unroll the loop, profit 0.3 cpb.
 	unsigned int i=9;
 	for ( ; i<rounds-1; ++i)
 	{
diff --git a/sha-simd.cpp b/sha-simd.cpp
index 2f96d49e..4e808c02 100644
--- a/sha-simd.cpp
+++ b/sha-simd.cpp
@@ -91,7 +91,7 @@ bool CPU_TrySHA1_ARMV8()
 	}
 	return result;
 # else
-#   if defined(__ANDROID__)
+#   if defined(__ANDROID__) && (defined(__aarch64__) || defined(__aarch32__))
     if (android_getCpuFeatures() & ANDROID_CPU_ARM64_FEATURE_SHA1)
 		return true;
     // https://sourceware.org/ml/libc-help/2017-08/msg00012.html
@@ -161,7 +161,7 @@ bool CPU_TrySHA2_ARMV8()
 	}
 	return result;
 #else
-#   if defined(__ANDROID__)
+#   if defined(__ANDROID__) && (defined(__aarch64__) || defined(__aarch32__))
     if (android_getCpuFeatures() & ANDROID_CPU_ARM64_FEATURE_SHA2)
 		return true;
     // https://sourceware.org/ml/libc-help/2017-08/msg00012.html