diff --git a/ci/test/00_setup_env_native_fuzz.sh b/ci/test/00_setup_env_native_fuzz.sh
index 92001c8860..edaaff34dd 100755
--- a/ci/test/00_setup_env_native_fuzz.sh
+++ b/ci/test/00_setup_env_native_fuzz.sh
@@ -17,4 +17,4 @@ export RUN_UNIT_TESTS=false
 export RUN_INTEGRATION_TESTS=false
 export RUN_FUZZ_TESTS=true
 export GOAL="install"
-export BITCOIN_CONFIG="--enable-zmq --disable-ccache --enable-fuzz --with-sanitizers=fuzzer,address,undefined --enable-c++17  --enable-suppress-external-warnings CC=clang-15 CXX=clang++-15"
+export BITCOIN_CONFIG="--enable-zmq --disable-ccache --enable-fuzz --with-sanitizers=fuzzer,address,undefined --enable-suppress-external-warnings CC=clang-15 CXX=clang++-15"
diff --git a/ci/test/00_setup_env_native_fuzz_with_valgrind.sh b/ci/test/00_setup_env_native_fuzz_with_valgrind.sh
index 9805ccf12b..ad2937e84b 100644
--- a/ci/test/00_setup_env_native_fuzz_with_valgrind.sh
+++ b/ci/test/00_setup_env_native_fuzz_with_valgrind.sh
@@ -15,4 +15,4 @@ export RUN_FUNCTIONAL_TESTS=false
 export RUN_FUZZ_TESTS=true
 export FUZZ_TESTS_CONFIG="--valgrind"
 export GOAL="install"
-export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer --enable-c++17 --enable-suppress-external-warnings CC=clang-15 CXX=clang++-15"
+export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer --enable-suppress-external-warnings CC=clang-15 CXX=clang++-15"