diff --git a/library/aesce.h b/library/aesce.h
index 91aa7d2..d24c423 100644
--- a/library/aesce.h
+++ b/library/aesce.h
@@ -30,7 +30,6 @@
 
 #include "mbedtls/aes.h"
 
-#include "common.h"
 
 #if defined(MBEDTLS_AESCE_C) && defined(MBEDTLS_ARCH_IS_ARM64)
 
diff --git a/library/aesni.h b/library/aesni.h
index e9064ee..ba14290 100644
--- a/library/aesni.h
+++ b/library/aesni.h
@@ -32,10 +32,6 @@
 #define MBEDTLS_AESNI_AES      0x02000000u
 #define MBEDTLS_AESNI_CLMUL    0x00000002u
 
-/* Can we do AESNI with inline assembly?
- * (Only implemented with gas syntax, only for 64-bit.)
- */
-
 #if defined(MBEDTLS_AESNI_C) && \
     (defined(MBEDTLS_ARCH_IS_X64) || defined(MBEDTLS_ARCH_IS_X86))
 
@@ -65,6 +61,9 @@
 #define MBEDTLS_AESNI_HAVE_CODE 2 // via intrinsics
 #elif defined(MBEDTLS_HAVE_ASM) && \
     defined(__GNUC__) && defined(MBEDTLS_ARCH_IS_X64)
+/* Can we do AESNI with inline assembly?
+ * (Only implemented with gas syntax, only for 64-bit.)
+ */
 #define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
 #elif defined(__GNUC__)
 #   error "Must use `-mpclmul -msse2 -maes` for MBEDTLS_AESNI_C"
diff --git a/library/padlock.h b/library/padlock.h
index d3ed2c3..a00afe0 100644
--- a/library/padlock.h
+++ b/library/padlock.h
@@ -38,9 +38,14 @@
 #endif
 #endif
 
-/* Some versions of ASan result in errors about not enough registers */
-#if defined(__GNUC__) && defined(MBEDTLS_ARCH_IS_X86) && \
-    defined(MBEDTLS_HAVE_ASM) && !defined(MBEDTLS_HAVE_ASAN)
+/*
+ * - `padlock` is implements with GNUC assembly for x86 target.
+ * - Some versions of ASan result in errors about not enough registers.
+ */
+#if defined(MBEDTLS_PADLOCK_C) && \
+    defined(__GNUC__) && defined(MBEDTLS_ARCH_IS_X86) && \
+    defined(MBEDTLS_HAVE_ASM) && \
+    !defined(MBEDTLS_HAVE_ASAN)
 
 #define MBEDTLS_VIA_PADLOCK_HAVE_CODE