diff --git a/pkgs/top-level/pkg-config/pkg-config-data.json b/pkgs/top-level/pkg-config/pkg-config-data.json
index 758986390b22..4578b0f92b25 100644
--- a/pkgs/top-level/pkg-config/pkg-config-data.json
+++ b/pkgs/top-level/pkg-config/pkg-config-data.json
@@ -670,7 +670,7 @@
     },
     "netsnmp": {
       "attrPath": [
-        "net_snmp"
+        "net-snmp"
       ]
     },
     "nix-cmd": {