diff --git a/.changelog/4081.bugfix.md b/.changelog/4081.bugfix.md
new file mode 100644
index 00000000000..dae5ca1596b
--- /dev/null
+++ b/.changelog/4081.bugfix.md
@@ -0,0 +1 @@
+ias/proxy/client: `GetSigRL` don't panic if IAS proxy not configured
diff --git a/go/ias/proxy/client/client.go b/go/ias/proxy/client/client.go
index 0e5160cbaaf..39fd9718866 100644
--- a/go/ias/proxy/client/client.go
+++ b/go/ias/proxy/client/client.go
@@ -80,6 +80,9 @@ func (c *proxyClient) GetSPIDInfo(ctx context.Context) (*api.SPIDInfo, error) {
 }
 
 func (c *proxyClient) GetSigRL(ctx context.Context, epidGID uint32) ([]byte, error) {
+	if c.endpoint == nil {
+		return nil, fmt.Errorf("IAS proxy is not configured, mock used")
+	}
 	return c.endpoint.GetSigRL(ctx, epidGID)
 }