diff --git a/src/deployer.sh b/src/deployer.sh
index 1e8f396..a6efad6 100755
--- a/src/deployer.sh
+++ b/src/deployer.sh
@@ -440,8 +440,8 @@ main() (
 			fail "Deployer process with pid='${pid}' is not running." \
 				"${err_deployer_process_not_running}"
 		fi
-		if ! kill "${pid}" || kill -KILL "${pid}"; then
-			fail "Cannot kill deployer process." \
+		if ! output="$(kill "${pid}" 2>&1 || kill -KILL "${pid}" 2>&1)"; then
+			fail "Cannot kill deployer process: ${output}." \
 				"${err_deployer_process_not_killed}"
 		fi
 		rm --force "${deployer_sock}"