diff --git a/src/library/blas/gens/gemv.c b/src/library/blas/gens/gemv.c
index 9835482f..17f34f4a 100644
--- a/src/library/blas/gens/gemv.c
+++ b/src/library/blas/gens/gemv.c
@@ -19,6 +19,7 @@
  * gemv generator
  */
 
+#include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <assert.h>
diff --git a/src/library/blas/gens/symv.c b/src/library/blas/gens/symv.c
index 47c8f1d2..355838b7 100644
--- a/src/library/blas/gens/symv.c
+++ b/src/library/blas/gens/symv.c
@@ -19,6 +19,7 @@
  * symv generator
  */
 
+#include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <assert.h>