diff --git a/content/xul/document/src/nsXULDocument.cpp b/content/xul/document/src/nsXULDocument.cpp
index 0768ad2269f6..ff7d893cdfe3 100644
--- a/content/xul/document/src/nsXULDocument.cpp
+++ b/content/xul/document/src/nsXULDocument.cpp
@@ -5569,6 +5569,7 @@ nsXULDocument::OnStreamComplete(nsIStreamLoader* aLoader,
             char* uriSpec;
             uri->GetSpec(&uriSpec);
             printf("Failed to load %s\n", uriSpec ? uriSpec : "");
+            nsCRT::free(uriSpec);
           }
         }
       }
diff --git a/rdf/content/src/nsXULDocument.cpp b/rdf/content/src/nsXULDocument.cpp
index 0768ad2269f6..ff7d893cdfe3 100644
--- a/rdf/content/src/nsXULDocument.cpp
+++ b/rdf/content/src/nsXULDocument.cpp
@@ -5569,6 +5569,7 @@ nsXULDocument::OnStreamComplete(nsIStreamLoader* aLoader,
             char* uriSpec;
             uri->GetSpec(&uriSpec);
             printf("Failed to load %s\n", uriSpec ? uriSpec : "");
+            nsCRT::free(uriSpec);
           }
         }
       }