diff --git a/libs/iksemel/openssl.m4 b/libs/iksemel/openssl.m4
index 8adea2192e..6bf1851021 100644
--- a/libs/iksemel/openssl.m4
+++ b/libs/iksemel/openssl.m4
@@ -33,7 +33,7 @@ else
       AC_CHECK_LIB(ssl, TLSv1_method,,
       	HAVE_TLS=0
       	AC_MSG_WARN(OpenSSL protocol library was not found))
-     ],[AC_MSG_WARN(OpenSSL include files were not found)])
+     ],[AC_MSG_WARN(OpenSSL include files were not found)],[#include <openssl/safestack.h>])
   fi
 
   if test x$HAVE_SSL = x1; then
diff --git a/libs/sofia-sip/m4/sac-openssl.m4 b/libs/sofia-sip/m4/sac-openssl.m4
index 7daf7f4773..289d3e132e 100644
--- a/libs/sofia-sip/m4/sac-openssl.m4
+++ b/libs/sofia-sip/m4/sac-openssl.m4
@@ -33,7 +33,7 @@ else
       AC_CHECK_LIB(ssl, TLSv1_method,,
       	HAVE_TLS=0
       	AC_MSG_WARN(OpenSSL protocol library was not found))
-     ],[AC_MSG_WARN(OpenSSL include files were not found)])
+     ],[AC_MSG_WARN(OpenSSL include files were not found)],[#include <openssl/safestack.h>])
   fi
 
   if test x$HAVE_OPENSSL = x1; then