diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index c8703719..c8cfd6c9 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -282,7 +282,12 @@ size_t ZSTD_resetCCtxParams(ZSTD_CCtx_params* params)
     return 0;
 }
 
-size_t ZSTD_initCCtxParams(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params)
+size_t ZSTD_initCCtxParams(ZSTD_CCtx_params* cctxParams, int compressionLevel) {
+    ZSTD_parameters const params = ZSTD_getParams(compressionLevel, 0, 0);
+    return ZSTD_initCCtxParams_advanced(cctxParams, params);
+}
+
+size_t ZSTD_initCCtxParams_advanced(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params)
 {
     if (!cctxParams) { return ERROR(GENERIC); }
     CHECK_F( ZSTD_checkCParams(params.cParams) );
diff --git a/lib/compress/zstdmt_compress.c b/lib/compress/zstdmt_compress.c
index 7c3bd019..c93d784d 100644
--- a/lib/compress/zstdmt_compress.c
+++ b/lib/compress/zstdmt_compress.c
@@ -584,7 +584,7 @@ static size_t ZSTDMT_compress_advanced_internal(
     size_t frameStartPos = 0, dstBufferPos = 0;
     XXH64_state_t xxh64;
     assert(jobParams.nbThreads == 0);
-    assert(mtctx->cctxPool.totalCCtx == params.nbThreads);
+    assert(mtctx->cctxPool->totalCCtx == params.nbThreads);
 
     DEBUGLOG(4, "nbChunks  : %2u   (chunkSize : %u bytes)   ", nbChunks, (U32)avgChunkSize);
     if (nbChunks==1) {   /* fallback to single-thread mode */
@@ -748,7 +748,7 @@ size_t ZSTDMT_initCStream_internal(
     /* params are supposed to be fully validated at this point */
     assert(!ZSTD_isError(ZSTD_checkCParams(params.cParams)));
     assert(!((dict) && (cdict)));  /* either dict or cdict, not both */
-    assert(mtctx->cctxPool.totalCCtx == params.nbThreads);
+    assert(zcs->cctxPool->totalCCtx == params.nbThreads);
 
     if (params.nbThreads==1) {
         ZSTD_CCtx_params const singleThreadParams = ZSTDMT_makeJobCCtxParams(params);
diff --git a/lib/zstd.h b/lib/zstd.h
index 01fbb18c..bfbe8284 100644
--- a/lib/zstd.h
+++ b/lib/zstd.h
@@ -1128,9 +1128,14 @@ ZSTDLIB_API ZSTD_CCtx_params* ZSTD_createCCtxParams(void);
 ZSTDLIB_API size_t ZSTD_resetCCtxParams(ZSTD_CCtx_params* params);
 
 /*! ZSTD_initCCtxParams() :
- *  Set the compression and frame parameters of cctxParams according to params.
- *  All other parameters are reset to their default values. */
-ZSTDLIB_API size_t ZSTD_initCCtxParams(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params);
+ *  Initializes the compression parameters of cctxParams according to
+ *  compression level. All other parameters are reset to their default values. */
+ZSTDLIB_API size_t ZSTD_initCCtxParams(ZSTD_CCtx_params* cctxParams, int compressionLevel);
+
+/*! ZSTD_initCCtxParams_advanced() :
+ *  Initializes the compression and frame parameters of cctxParams according to
+ *  params. All other parameters are reset to their default values. */
+ZSTDLIB_API size_t ZSTD_initCCtxParams_advanced(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params);
 
 ZSTDLIB_API size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params);