diff --git a/common/lz4/lz4.c b/common/lz4/lz4.c
index da5bbf1e2..0b7df1fb0 100644
--- a/common/lz4/lz4.c
+++ b/common/lz4/lz4.c
@@ -1586,7 +1586,7 @@ int LZ4_compress_fast_continue(LZ4_stream_t *LZ4_stream,
                  * cost to copy the dictionary's tables into the active context,
                  * so that the compression loop is only looking into one table.
                  */
-                LZ4_memcpy(streamPtr, streamPtr->dictCtx, sizeof(LZ4_stream_t));
+                LZ4_memcpy(streamPtr, streamPtr->dictCtx, sizeof(*streamPtr));
                 result = LZ4_compress_generic(streamPtr, source, dest, inputSize, NULL, maxOutputSize, limitedOutput, tableType, usingExtDict, noDictIssue, acceleration);
             } else {
                 result = LZ4_compress_generic(streamPtr, source, dest, inputSize, NULL, maxOutputSize, limitedOutput, tableType, usingDictCtx, noDictIssue, acceleration);