diff --git a/tests/virbuftest.c b/tests/virbuftest.c
index 56a6ece8f6..f8eadea25a 100644
--- a/tests/virbuftest.c
+++ b/tests/virbuftest.c
@@ -244,7 +244,7 @@ struct testBufAddStrData {
 };
 
 static int
-testBufAddStr(const void *opaque G_GNUC_UNUSED)
+testBufAddStr(const void *opaque)
 {
     const struct testBufAddStrData *data = opaque;
     virBuffer buf = VIR_BUFFER_INITIALIZER;
@@ -277,7 +277,7 @@ testBufAddStr(const void *opaque G_GNUC_UNUSED)
 
 
 static int
-testBufEscapeStr(const void *opaque G_GNUC_UNUSED)
+testBufEscapeStr(const void *opaque)
 {
     const struct testBufAddStrData *data = opaque;
     virBuffer buf = VIR_BUFFER_INITIALIZER;