diff --git a/contrib/teamcity/build.sh b/contrib/teamcity/build.sh
index 3982bd1cc..62b2f0331 100755
--- a/contrib/teamcity/build.sh
+++ b/contrib/teamcity/build.sh
@@ -1,101 +1,101 @@
 #!/bin/bash
 
 set -eu
 
 TOPLEVEL=`git rev-parse --show-toplevel`
 if [[ -z "${TOPLEVEL}" ]]; then
 	echo "No .git directory found, assuming pwd"
 	TOPLEVEL=`pwd -P`
 fi
 
 BUILD_DIR="${TOPLEVEL}/build"
 mkdir -p ${BUILD_DIR}
 
 ## Generate necessary autoconf files
 cd ${TOPLEVEL}
 ./autogen.sh
 cd ${BUILD_DIR}
 
 rm -f build.status test_bitcoin.xml
 
 ## Determine the number of build threads
 THREADS=$(nproc || sysctl -n hw.ncpu)
 
 # Default to nothing
 : ${DISABLE_WALLET:=}
 : ${CONFIGURE_FLAGS:=}
 
-CONFIGURE_FLAGS+=("--prefix=`pwd`")
+CONFIGURE_FLAGS=($CONFIGURE_FLAGS "--prefix=`pwd`")
 if [[ ! -z "${DISABLE_WALLET}" ]]; then
 	echo "*** Building without wallet"
 	CONFIGURE_FLAGS+=("--disable-wallet")
 fi
 
 # Default to nothing
 : ${ENABLE_DEBUG:=}
 
 if [[ ! -z "${ENABLE_DEBUG}" ]]; then
 	echo "*** Building with debug"
 	CONFIGURE_FLAGS+=("--enable-debug")
 fi
 
 ../configure "${CONFIGURE_FLAGS[@]}"
 
 # Base directories for sanitizer related files 
 SAN_SUPP_DIR="${TOPLEVEL}/test/sanitizer_suppressions"
 SAN_LOG_DIR="${BUILD_DIR}/sanitizer_logs"
 
 # Create the log directory if it doesn't exist and clear it
 mkdir -p "${SAN_LOG_DIR}"
 rm -rf "${SAN_LOG_DIR}"/*
 
 # Sanitizers options, not used if sanitizers are not enabled
 export ASAN_OPTIONS="log_path=${SAN_LOG_DIR}/asan.log"
 export LSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/lsan:log_path=${SAN_LOG_DIR}/lsan.log"
 export TSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/tsan:log_path=${SAN_LOG_DIR}/tsan.log"
 export UBSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/ubsan:print_stacktrace=1:halt_on_error=1:log_path=${SAN_LOG_DIR}/ubsan.log"
 
 function print_sanitizers_log() {
 	for log in "${SAN_LOG_DIR}"/*.log.*
 	do
 		echo "*** Output of ${log} ***"
 		cat "${log}"
 	done
 }
 
 # Run build
 make -j ${THREADS}
 
 # Default to nothing
 : ${DISABLE_TESTS:=}
 
 # If DISABLE_TESTS is unset (default), run the tests
 if [[ -z "${DISABLE_TESTS}" ]]; then
 	echo "*** Running tests"
 
 	# Run unit tests
 	make -j ${THREADS} check || (print_sanitizers_log && exit 1)
 
 	# FIXME Remove when the functional tests are running with debug enabled
 	if [[ -z "${ENABLE_DEBUG}" ]]; then
 		mkdir -p output/
 		BRANCH=$(git rev-parse --abbrev-ref HEAD)
 		JUNIT_DEFAULT="junit_results_default.xml"
 		JUNIT_NEXT_UPGRADE="junit_results_next_upgrade.xml"
 
 		if [[ ! -z "${DISABLE_WALLET}" ]]; then
 			echo "Skipping rpc testing due to disabled wallet functionality."
 		elif [[ "${BRANCH}" == "master" ]]; then
 			./test/functional/test_runner.py -J="${JUNIT_DEFAULT}" --cutoff=600 --tmpdirprefix=output
 			./test/functional/test_runner.py -J="${JUNIT_NEXT_UPGRADE}" --cutoff=600 --tmpdirprefix=output --with-gravitonactivation
 		else
 			./test/functional/test_runner.py -J="${JUNIT_DEFAULT}" --tmpdirprefix=output
 			./test/functional/test_runner.py -J="${JUNIT_NEXT_UPGRADE}" --tmpdirprefix=output --with-gravitonactivation
 		fi
 	else
 		echo "*** Functional tests have been skipped"
 	fi
 else
 	echo "*** Tests have been skipped"
 fi