diff --git a/tests/paramgrill.c b/tests/paramgrill.c
index 5275f10a5..dbddd242f 100644
--- a/tests/paramgrill.c
+++ b/tests/paramgrill.c
@@ -70,9 +70,6 @@ static const int g_maxNbVariations = 64;
 #define FADT_MIN 0
 #define FADT_MAX ((U32)-1)
 
-#define ZSTD_TARGETLENGTH_MIN 0
-#define ZSTD_TARGETLENGTH_MAX 999
-
 #define WLOG_RANGE (ZSTD_WINDOWLOG_MAX - ZSTD_WINDOWLOG_MIN + 1)
 #define CLOG_RANGE (ZSTD_CHAINLOG_MAX - ZSTD_CHAINLOG_MIN + 1)
 #define HLOG_RANGE (ZSTD_HASHLOG_MAX - ZSTD_HASHLOG_MIN + 1)
@@ -1192,6 +1189,7 @@ static int createContexts(contexts_t* ctx, const char* dictFileName) {
         return 0;
     }
     ctx->dictSize = UTIL_getFileSize(dictFileName);
+    assert(ctx->dictSize != UTIL_FILESIZE_UNKNOWN);
     ctx->dictBuffer = malloc(ctx->dictSize);
 
     f = fopen(dictFileName, "rb");