diff --git a/src/main.c b/src/main.c
index ed08cdc..51caed8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -115,6 +115,9 @@ static void _version(bool nl) {
 	printf(VERSION);
 #	ifdef WITH_OMX
 	printf(" + OMX");
+#	endif
+#	ifdef WITH_GPIO
+	printf(" + GPIO");
 #	endif
 	if (nl) {
 		putchar('\n');