--- a/contrib/python-zstandard/c-ext/compressiondict.c	Thu Apr 04 15:24:03 2019 -0700
+++ b/contrib/python-zstandard/c-ext/compressiondict.c	Thu Apr 04 17:34:43 2019 -0700
@@ -298,13 +298,9 @@
 		cParams = ZSTD_getCParams(level, 0, self->dictSize);
 	}
 	else {
-		cParams.chainLog = compressionParams->chainLog;
-		cParams.hashLog = compressionParams->hashLog;
-		cParams.searchLength = compressionParams->minMatch;
-		cParams.searchLog = compressionParams->searchLog;
-		cParams.strategy = compressionParams->compressionStrategy;
-		cParams.targetLength = compressionParams->targetLength;
-		cParams.windowLog = compressionParams->windowLog;
+		if (to_cparams(compressionParams, &cParams)) {
+			return NULL;
+		}
 	}
 
 	assert(!self->cdict);