diff --git a/sbc/sbc_primitives.c b/sbc/sbc_primitives.c
index 97a75be..ac79ca5 100644
--- a/sbc/sbc_primitives.c
+++ b/sbc/sbc_primitives.c
@@ -591,6 +591,7 @@ static int sbc_calc_scalefactors_j(
 	return joint;
 }
 
+#if defined(__i386__) || defined(__x86_64__)
 static void sbc_init_primitives_x86(struct sbc_encoder_state *state)
 {
 	__builtin_cpu_init();
@@ -605,6 +606,7 @@ static void sbc_init_primitives_x86(struct sbc_encoder_state *state)
 		sbc_init_primitives_sse(state);
 #endif
 }
+#endif
 
 /*
  * Detect CPU features and setup function pointers
@@ -630,7 +632,9 @@ void sbc_init_primitives(struct sbc_encoder_state *state)
 	state->implementation_info = "Generic C";
 
 	/* X86/AMD64 optimizations */
+#if defined(__i386__) || defined(__x86_64__)
 	sbc_init_primitives_x86(state);
+#endif
 
 	/* ARM optimizations */
 #ifdef SBC_BUILD_WITH_ARMV6_SUPPORT