diff --git a/include/svf.h b/include/svf.h
index 8e68b96..c91e04a 100644
--- a/include/svf.h
+++ b/include/svf.h
@@ -117,7 +117,7 @@ svf_gen_matrix(svf s)
 }
 
 INNER void
-svf_run_block_mat(svf_matrix *restrict mat, v4sf *restrict buf, ulong count)
+svf_run_block_mat(svf_matrix *RESTRICT mat, v4sf *RESTRICT buf, ulong count)
 {
 	v4sf t1, t2, t3, t4;
 	v4sf memory = mat->memory;
diff --git a/include/util.h b/include/util.h
index 0224383..cb1a984 100644
--- a/include/util.h
+++ b/include/util.h
@@ -9,6 +9,7 @@
 #define INNER static inline
 #define PURE __attribute__((pure))
 #define CONST __attribute__((const))
+#define RESTRICT __restrict__
 
 typedef double v2df __attribute__((vector_size(16), aligned(16)));
 typedef float v2sf __attribute__((vector_size(8), aligned(8)));