diff --git a/utils/alsa.m4 b/utils/alsa.m4
index 40e50a19..461d8d5e 100644
--- a/utils/alsa.m4
+++ b/utils/alsa.m4
@@ -85,6 +85,7 @@ AC_LANG_PUSH([C])
 AC_MSG_CHECKING([for libasound headers version >= $alsa_min_major_version.$alsa_min_minor_version.$alsa_min_micro_version ($min_alsa_version)])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #include <alsa/asoundlib.h>
+#include <stdlib.h>
 ]], [[
 /* ensure backward compatibility */
 #if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)
@@ -130,6 +131,7 @@ AC_MSG_CHECKING([for libatopology (sound headers version > 1.1.9)])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #include <alsa/asoundlib.h>
 #include <alsa/topology.h>
+#include <stdlib.h>
 ]], [[
 /* ensure backward compatibility */
 #if !defined(SND_LIB_VERSION)