diff --git a/tangostationcontrol/tangostationcontrol/clients/snmp_client.py b/tangostationcontrol/tangostationcontrol/clients/snmp_client.py
index 8f8c7e78588e2e51fc7c4d8d84f128081f0e484f..4776bd15f922714739c05f8fbb316606e923877f 100644
--- a/tangostationcontrol/tangostationcontrol/clients/snmp_client.py
+++ b/tangostationcontrol/tangostationcontrol/clients/snmp_client.py
@@ -231,7 +231,7 @@ class mib_loader:
         if not path.isabs(mib_dir):
             mib_dir = "/" + mib_dir
 
-        compiler.addMibCompiler(self.mibBuilder, sources=[f'/opt/lofar/tango/tangostationcontrol/tangostationcontrol/test/clients/SNMP_mib_loading/"', ])
+        compiler.addMibCompiler(self.mibBuilder, sources=[f'file://{mib_dir}', ])
         logger.debug(f"mib sources: {self.mibBuilder.getMibSources()}")
 
     def load_pymib(self, mib_name):