diff --git a/samples/base-qcow2.json b/samples/base-qcow2.json
index 312a97fb..efce05fa 100644
--- a/samples/base-qcow2.json
+++ b/samples/base-qcow2.json
@@ -24,7 +24,7 @@
           "xen-libs",
           "langpacks-en"
         ],
-        "exclude-packages": [
+        "exclude_packages": [
           "dracut-config-rescue"
         ]
       }
diff --git a/stages/org.osbuild.dnf b/stages/org.osbuild.dnf
index 26283e9e..71e1f994 100755
--- a/stages/org.osbuild.dnf
+++ b/stages/org.osbuild.dnf
@@ -60,7 +60,7 @@ def main(tree, options):
     basearch = options["basearch"]
     operation = options.get("operation", "install")
     weak_deps = options.get("install_weak_deps", True)
-    exclude_packages = options.get("exclude-packages", [])
+    exclude_packages = options.get("exclude_packages", [])
 
     with open("/tmp/dnf.conf", "w") as conf:
         for repoid, repo in enumerate(repos):
diff --git a/test/pipelines/f30-boot.json b/test/pipelines/f30-boot.json
index 7ff426e5..5d05482b 100644
--- a/test/pipelines/f30-boot.json
+++ b/test/pipelines/f30-boot.json
@@ -51,7 +51,7 @@
           "xen-libs",
           "langpacks-en"
         ],
-        "exclude-packages": [
+        "exclude_packages": [
           "dracut-config-rescue"
         ]
       }