diff --git a/configure.ac b/configure.ac
index 4bb9380..38e2cf6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -133,7 +134,11 @@ AC_CHECK_LIB(socket, connect)
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
 	AC_TRY_LINK([],
-		[ extern char *__progname; printf("%s", __progname); ],
+		[
+			#include <stdio.h>;
+			extern char *__progname;
+			printf("%s", __progname);
+		],
 		[ ac_cv_libc_defines___progname="yes" ],
 		[ ac_cv_libc_defines___progname="no" ]
 	)