diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h
index cb01fb688b..4b02d19809 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)