diff --git a/src/util/virqemu.c b/src/util/virqemu.c
index 15602e30db..b9e57a6f4c 100644
--- a/src/util/virqemu.c
+++ b/src/util/virqemu.c
@@ -53,8 +53,7 @@ virQEMUBuildCommandLineJSONRecurse(const char *key,
 int
 virQEMUBuildCommandLineJSONArrayBitmap(const char *key,
                                        virJSONValue *array,
-                                       virBuffer *buf,
-                                       const char *skipKey G_GNUC_UNUSED)
+                                       virBuffer *buf)
 {
     ssize_t pos = -1;
     ssize_t end;
@@ -90,8 +89,7 @@ virQEMUBuildCommandLineJSONArrayBitmap(const char *key,
 int
 virQEMUBuildCommandLineJSONArrayNumbered(const char *key,
                                          virJSONValue *array,
-                                         virBuffer *buf,
-                                         const char *skipKey)
+                                         virBuffer *buf)
 {
     virJSONValue *member;
     size_t i;
@@ -102,7 +100,7 @@ virQEMUBuildCommandLineJSONArrayNumbered(const char *key,
         member = virJSONValueArrayGet((virJSONValue *) array, i);
         prefix = g_strdup_printf("%s.%zu", key, i);
 
-        if (virQEMUBuildCommandLineJSONRecurse(prefix, member, buf, skipKey,
+        if (virQEMUBuildCommandLineJSONRecurse(prefix, member, buf, NULL,
                                                virQEMUBuildCommandLineJSONArrayNumbered,
                                                true) < 0)
             return 0;
@@ -127,8 +125,7 @@ virQEMUBuildCommandLineJSONArrayNumbered(const char *key,
 int
 virQEMUBuildCommandLineJSONArrayObjectsStr(const char *key,
                                            virJSONValue *array,
-                                           virBuffer *buf,
-                                           const char *skipKey G_GNUC_UNUSED)
+                                           virBuffer *buf)
 {
     g_auto(virBuffer) tmp = VIR_BUFFER_INITIALIZER;
     size_t i;
@@ -221,7 +218,7 @@ virQEMUBuildCommandLineJSONRecurse(const char *key,
             return -1;
         }
 
-        if (arrayFunc(key, value, buf, NULL) < 0) {
+        if (arrayFunc(key, value, buf) < 0) {
             /* fallback, treat the array as a non-bitmap, adding the key
              * for each member */
             for (i = 0; i < virJSONValueArraySize(value); i++) {
diff --git a/src/util/virqemu.h b/src/util/virqemu.h
index 472f24de53..be083d7545 100644
--- a/src/util/virqemu.h
+++ b/src/util/virqemu.h
@@ -28,20 +28,16 @@
 
 typedef int (*virQEMUBuildCommandLineJSONArrayFormatFunc)(const char *key,
                                                           virJSONValue *array,
-                                                          virBuffer *buf,
-                                                          const char *skipKey);
+                                                          virBuffer *buf);
 int virQEMUBuildCommandLineJSONArrayObjectsStr(const char *key,
                                                virJSONValue *array,
-                                               virBuffer *buf,
-                                               const char *skipKey);
+                                               virBuffer *buf);
 int virQEMUBuildCommandLineJSONArrayBitmap(const char *key,
                                            virJSONValue *array,
-                                           virBuffer *buf,
-                                           const char *skipKey);
+                                           virBuffer *buf);
 int virQEMUBuildCommandLineJSONArrayNumbered(const char *key,
                                              virJSONValue *array,
-                                             virBuffer *buf,
-                                             const char *skipKey);
+                                             virBuffer *buf);
 
 int virQEMUBuildCommandLineJSON(virJSONValue *value,
                                 virBuffer *buf,