diff --git a/lib/compress/zstd_cwksp.h b/lib/compress/zstd_cwksp.h
index f6068127b..bae5b654d 100644
--- a/lib/compress/zstd_cwksp.h
+++ b/lib/compress/zstd_cwksp.h
@@ -478,9 +478,10 @@ MEM_STATIC size_t ZSTD_cwksp_create(ZSTD_cwksp* ws, size_t size, ZSTD_customMem
 }
 
 MEM_STATIC void ZSTD_cwksp_free(ZSTD_cwksp* ws, ZSTD_customMem customMem) {
+    void *ptr = ws->workspace;
     DEBUGLOG(4, "cwksp: freeing workspace");
-    ZSTD_free(ws->workspace, customMem);
     memset(ws, 0, sizeof(ZSTD_cwksp));
+    ZSTD_free(ptr, customMem);
 }
 
 /**