diff --git a/programs/lz4io.c b/programs/lz4io.c
index ba2a6e8..258af5b 100644
--- a/programs/lz4io.c
+++ b/programs/lz4io.c
@@ -1021,5 +1021,6 @@ int LZ4IO_decompressMultipleFilenames(const char** inFileNamesTable, int ifntSiz
 
     LZ4IO_freeDResources(ress);
     free(outFileName);
+    free(ifnSuffix);
     return missingFiles + skippedFiles;
 }