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-rw-r--r--searchlib/src/tests/bitvector/bitvectorbenchmark.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/searchlib/src/tests/bitvector/bitvectorbenchmark.cpp b/searchlib/src/tests/bitvector/bitvectorbenchmark.cpp
index 17300125ed4..dc0dc646d77 100644
--- a/searchlib/src/tests/bitvector/bitvectorbenchmark.cpp
+++ b/searchlib/src/tests/bitvector/bitvectorbenchmark.cpp
@@ -168,7 +168,7 @@ int BitVectorBenchmark::Main()
int idx = 1;
std::string operation;
size_t numBits(8*1000000);
- char opt;
+ int opt;
const char * arg;
bool optError = false;
while ((opt = GetOpt("n:t:", arg, idx)) != -1) {