diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index 222d2b40a..ea87b4061 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -4442,7 +4442,7 @@ size_t ZSTD_estimateCStreamSize(int compressionLevel)
 static ZSTD_frameProgression ZSTD_rust_frameProgression_MT(void* context)
 {
 #ifdef ZSTD_MULTITHREAD
-    return ZSTDMT_getFrameProgression((const ZSTDMT_CCtx*)context);
+    return ZSTDMT_getFrameProgression((ZSTDMT_CCtx*)context);
 #else
     (void)context;
     return (ZSTD_frameProgression){ 0 };