diff --git a/pipeline/frontend/yaml/compiler/settings/params.go b/pipeline/frontend/yaml/compiler/settings/params.go
index 08cdf26e9..f078643e6 100644
--- a/pipeline/frontend/yaml/compiler/settings/params.go
+++ b/pipeline/frontend/yaml/compiler/settings/params.go
@@ -44,8 +44,9 @@ func ParamsToEnv(from map[string]any, to map[string]string, prefix string, upper
 
 // sanitizeParamKey formats the environment variable key.
 func sanitizeParamKey(prefix string, upper bool, k string) string {
-	r := strings.ReplaceAll(strings.ReplaceAll(k, ".", "_"), "-", "_")
+	r := k
 	if upper {
+		r = strings.ReplaceAll(strings.ReplaceAll(k, ".", "_"), "-", "_")
 		r = strings.ToUpper(r)
 	}
 	return prefix + r
diff --git a/pipeline/frontend/yaml/compiler/settings/params_test.go b/pipeline/frontend/yaml/compiler/settings/params_test.go
index 5e3e6da12..386b58d02 100644
--- a/pipeline/frontend/yaml/compiler/settings/params_test.go
+++ b/pipeline/frontend/yaml/compiler/settings/params_test.go
@@ -110,8 +110,9 @@ func TestSanitizeParamKey(t *testing.T) {
 	assert.EqualValues(t, "PLUGIN_DRY_RUN", sanitizeParamKey("PLUGIN_", true, "dry-run"))
 	assert.EqualValues(t, "PLUGIN_DRY_RUN", sanitizeParamKey("PLUGIN_", true, "dry_Run"))
 	assert.EqualValues(t, "PLUGIN_DRY_RUN", sanitizeParamKey("PLUGIN_", true, "dry.run"))
-	assert.EqualValues(t, "PLUGIN_dry_run", sanitizeParamKey("PLUGIN_", false, "dry-run"))
+	assert.EqualValues(t, "PLUGIN_dry-run", sanitizeParamKey("PLUGIN_", false, "dry-run"))
 	assert.EqualValues(t, "PLUGIN_dry_Run", sanitizeParamKey("PLUGIN_", false, "dry_Run"))
+	assert.EqualValues(t, "PLUGIN_dry.run", sanitizeParamKey("PLUGIN_", false, "dry.run"))
 }
 
 func TestYAMLToParamsToEnv(t *testing.T) {