diff --git a/kernels/arm/neon/3/bli_gemm_opt_4x4.c b/kernels/arm/neon/3/bli_gemm_opt_4x4.c
index 54710b4ae..6c6fe4fbe 100644
--- a/kernels/arm/neon/3/bli_gemm_opt_4x4.c
+++ b/kernels/arm/neon/3/bli_gemm_opt_4x4.c
@@ -33,6 +33,7 @@
 */
 
 #include "blis.h"
+#include "arm_neon.h"
 
 void bli_sgemm_opt_4x4(
                         dim_t              k,