diff --git a/build-tools/mockchain-parallel b/build-tools/mockchain-parallel
index 7e37e5b1..8645d30f 100755
--- a/build-tools/mockchain-parallel
+++ b/build-tools/mockchain-parallel
@@ -59,8 +59,11 @@ DEFAULT_MOCKCHAIN_PARALLEL_PATH="${MOCKCHAIN_PARALLEL_PATH_ROOT}-1.3.4"
 MOCKCHAIN_INTERPRETER_PATH=$(interpreter_path ${MOCKCHAIN_PATH})
 MOCKCHAIN_VER=$(get__version__ ${MOCKCHAIN_PATH})
 if [ -z "${MOCKCHAIN_VER}" ]; then
-    echo "Error: Failed to determine version of '${MOCKCHAIN_PATH}'"
-    exit 1
+    MOCKCHAIN_VER=$(rpm -q --queryformat '%{VERSION}' mock)
+    if [ -z "${MOCKCHAIN_VER}" ]; then
+        echo "Error: Failed to determine version of '${MOCKCHAIN_PATH}'"
+        exit 1
+    fi
 fi
 
 BEST_VER=""
@@ -101,5 +104,5 @@ if [ -z "${MOCKCHAIN_PARALLEL_PATH}" ]; then
     MOCKCHAIN_PARALLEL_PATH="${DEFAULT_MOCKCHAIN_PARALLEL_PATH}"
 fi
 
-echo "PYTHONDONTWRITEBYTECODE=true exec ${MOCKCHAIN_INTERPRETER_PATH} ${MOCKCHAIN_PARALLEL_PATH} $@"
-PYTHONDONTWRITEBYTECODE=true exec ${MOCKCHAIN_INTERPRETER_PATH} ${MOCKCHAIN_PARALLEL_PATH} "$@"
+echo "PYTHONDONTWRITEBYTECODE=true exec ${MOCKCHAIN_PARALLEL_INTERPRETER_PATH} ${MOCKCHAIN_PARALLEL_PATH} $@"
+PYTHONDONTWRITEBYTECODE=true exec ${MOCKCHAIN_PARALLEL_INTERPRETER_PATH} ${MOCKCHAIN_PARALLEL_PATH} "$@"