diff --git a/build_files/build.sh b/build_files/build.sh
index f669e6a..cb556cf 100644
--- a/build_files/build.sh
+++ b/build_files/build.sh
@@ -58,16 +58,20 @@ systemctl enable kamos-flatpaks.service
 REL=$(rpm -E %fedora)
 ARCH=$(uname -m)
 for repo in /etc/yum.repos.d/*.repo; do
-    for key in $(grep -oP "(?<=gpgkey=file://)\S+" "$repo" 2>/dev/null || true); do
+    while IFS= read -r key; do
         k="${key//\$releasever/$REL}"
         k="${k//\$basearch/$ARCH}"
         if [ ! -f "$k" ]; then
-            echo "Disabling $repo (missing GPG key $k)"
-            sed -i "s/^enabled=1/enabled=0/" "$repo"
+            echo "Removing $repo (missing GPG key $k)"
+            rm -f "$repo"
             break
         fi
-    done
+    done < <(grep -oP "gpgkey\s*=\s*file://\K\S+" "$repo" 2>/dev/null || true)
 done
+echo "=== KAMOS repo check: remaining repo files ==="
+ls -la /etc/yum.repos.d/
+grep -H "^\s*enabled" /etc/yum.repos.d/*.repo || true
+echo "=== end repo check ==="
 
 ### ---------------------------------------------------------------
 ### 7. System defaults