diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 96af27bf00..5c1ab6204b 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -62,7 +62,7 @@ VIR_ENUM_IMPL(virStorageFileFormat,
               "cloop", "dmg", "iso",
               "vpc", "vdi",
               /* Not direct file formats, but used for various drivers */
-              "fat", "vhd",
+              "fat", "vhd", "ploop",
               /* Formats with backing file below here */
               "cow", "qcow", "qcow2", "qed", "vmdk")
 
@@ -230,6 +230,8 @@ static struct FileTypeInfo const fileTypeInfo[] = {
                                -1, {0}, 0, 0, 0, 0, NULL, NULL },
     [VIR_STORAGE_FILE_VHD] = { 0, NULL, NULL, LV_LITTLE_ENDIAN,
                                -1, {0}, 0, 0, 0, 0, NULL, NULL },
+    [VIR_STORAGE_FILE_PLOOP] = { 0, NULL, NULL, LV_LITTLE_ENDIAN,
+                               -1, {0}, 0, 0, 0, 0, NULL, NULL },
 
     /* All formats with a backing store probe below here */
     [VIR_STORAGE_FILE_COW] = {
diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
index 0a1960311a..bdc79440c0 100644
--- a/src/util/virstoragefile.h
+++ b/src/util/virstoragefile.h
@@ -72,6 +72,7 @@ typedef enum {
     /* Not direct file formats, but used for various drivers */
     VIR_STORAGE_FILE_FAT,
     VIR_STORAGE_FILE_VHD,
+    VIR_STORAGE_FILE_PLOOP,
 
     /* Not a format, but a marker: all formats below this point have
      * libvirt support for following a backing chain */