diff --git a/tests/fuzz/oss-fuzz-build b/tests/fuzz/oss-fuzz-build
index e83c5c809..9a511b5ba 100755
--- a/tests/fuzz/oss-fuzz-build
+++ b/tests/fuzz/oss-fuzz-build
@@ -36,6 +36,7 @@ set -euxo pipefail
     cmake -GNinja \
         -DCMAKE_C_FLAGS="${CFLAGS}" \
         -DCMAKE_CXX_FLAGS="${CXXFLAGS}" \
+        -DBUILD_TESTING=OFF \
         -DOT_BUILD_EXECUTABLES=OFF \
         -DOT_FUZZ_TARGETS=ON \
         -DOT_MTD=OFF \