diff --git a/tools/libxl/libxl_blktap2.c b/tools/libxl/libxl_blktap2.c
index 4f5e522f75..5c9a0a2da8 100644
--- a/tools/libxl/libxl_blktap2.c
+++ b/tools/libxl/libxl_blktap2.c
@@ -47,6 +47,7 @@ char *libxl__blktap_devpath(libxl__gc *gc,
         return devname;
     }
 
+    free(devname);
     return NULL;
 }