diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h
index cb01fb688b619149573eb0ccc20cebd41fef1a6b..4b02d1980948d4cea4089d89142c08ba498ce505 100644
--- a/src/qemu/qemu_conf.h
+++ b/src/qemu/qemu_conf.h
@@ -288,7 +288,7 @@ typedef qemuSharedDeviceEntry *qemuSharedDeviceEntryPtr;
 
 bool qemuSharedDeviceEntryDomainExists(qemuSharedDeviceEntryPtr entry,
                                        const char *name,
-                                       int *index)
+                                       int *idx)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
 
 char *qemuGetSharedDeviceKey(const char *disk_path)