diff --git a/src/pesign-rpmbuild-helper.in b/src/pesign-rpmbuild-helper.in
index 30d5441..5078ee4 100644
--- a/src/pesign-rpmbuild-helper.in
+++ b/src/pesign-rpmbuild-helper.in
@@ -144,7 +144,7 @@ main() {
     fi
 
     target_cpu="${target_cpu/i?86/ia32}"
-    target_cpu="${target_cpu/x86_64/x64}"
+    target_cpu="${target_cpu/x86_64*/x64}"
     target_cpu="${target_cpu/aarch64/aa64}"
     target_cpu="${target_cpu/arm*/arm/}"