From b5e4f6bb14e425edc9390341f38f754f6c2fb5f0 Mon Sep 17 00:00:00 2001
From: Justin Smith <justsmth@amazon.com>
Date: Mon, 15 Apr 2024 09:04:14 -0400
Subject: [PATCH] per PR feedback

---
 aws-lc-fips-sys/CMakeLists.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/aws-lc-fips-sys/CMakeLists.txt b/aws-lc-fips-sys/CMakeLists.txt
index 3aec934a133..940752d4eac 100644
--- a/aws-lc-fips-sys/CMakeLists.txt
+++ b/aws-lc-fips-sys/CMakeLists.txt
@@ -62,6 +62,7 @@ if (BORINGSSL_PREFIX)
     set_my_target_properties(PREFIX ${TARGET_PREFIX})
 
     # This BORINGSSL_PREFIX has an "_" appended, so we must remove it
-    string(REGEX REPLACE "_$" "" BORINGSSL_PREFIX_MACRO ${BORINGSSL_PREFIX})
+    set(BORINGSSL_PREFIX_MACRO "${BORINGSSL_PREFIX}")
+    string(REGEX REPLACE "_$" "" BORINGSSL_PREFIX_MACRO ${BORINGSSL_PREFIX_MACRO})
     add_definitions(-DBORINGSSL_PREFIX=${BORINGSSL_PREFIX_MACRO})
 endif ()