diff --git a/sbc/sbc_math.h b/sbc/sbc_math.h
index 9f126c6..5476860 100644
--- a/sbc/sbc_math.h
+++ b/sbc/sbc_math.h
@@ -48,7 +48,7 @@ typedef int32_t sbc_fixed_t;
 
 #define SBC_FIXED_0(val) { val = 0; }
 #define MUL(a, b)        ((a) * (b))
-#ifdef __arm__
+#if defined(__arm__) && (!defined(__thumb__) || defined(__thumb2__))
 #define MULA(a, b, res) ({				\
 		int tmp = res;			\
 		__asm__(				\
diff --git a/sbc/sbc_primitives_armv6.h b/sbc/sbc_primitives_armv6.h
index 1862aed..6a9efe5 100644
--- a/sbc/sbc_primitives_armv6.h
+++ b/sbc/sbc_primitives_armv6.h
@@ -40,8 +40,8 @@
 
 #if !defined(SBC_HIGH_PRECISION) && (SCALE_OUT_BITS == 15) && \
 	defined(__GNUC__) && defined(SBC_HAVE_ARMV6) && \
-	defined(__ARM_EABI__) && !defined(__thumb__) && \
-	!defined(__ARM_NEON__)
+	defined(__ARM_EABI__) && !defined(__ARM_NEON__) && \
+	(!defined(__thumb__) || defined(__thumb2__))
 
 #define SBC_BUILD_WITH_ARMV6_SUPPORT