diff --git a/config_asm.h b/config_asm.h
index bd9a2f19..1557ebce 100644
--- a/config_asm.h
+++ b/config_asm.h
@@ -364,6 +364,8 @@
 #if !defined(CRYPTOPP_DISABLE_ASM) && defined(__arm__)
 # if defined(__GNUC__) && !defined(__clang__)
 #  define CRYPTOGAMS_ARM_AES      1
+# endif
+# if defined(__GNUC__)
 #  define CRYPTOGAMS_ARM_SHA1     1
 #  define CRYPTOGAMS_ARM_SHA256   1
 #  define CRYPTOGAMS_ARM_SHA512   1