diff --git a/src/emu/eigccx86.h b/src/emu/eigccx86.h
index f9a3c3dbe0d..202efcbec6e 100644
--- a/src/emu/eigccx86.h
+++ b/src/emu/eigccx86.h
@@ -16,6 +16,7 @@
 /* Include MMX/SSE intrinsics headers */
 
 #ifdef __SSE2__
+#include <stdlib.h>
 #include <mmintrin.h>	/* MMX */
 #include <xmmintrin.h>	/* SSE */
 #include <emmintrin.h>	/* SSE2 */