diff --git a/python/src/META-INF/python-core-common.xml b/python/src/META-INF/python-core-common.xml
index ac3e089feb14..7651a91f9d8e 100644
--- a/python/src/META-INF/python-core-common.xml
+++ b/python/src/META-INF/python-core-common.xml
@@ -542,7 +542,7 @@
     <editorSmartKeysConfigurable instance="com.jetbrains.python.codeInsight.PySmartKeysOptions"/>
     <editorSmartKeysConfigurable instance="com.jetbrains.python.codeInsight.PySpecificSmartKeysOptions"/>
 
-    <psi.referenceContributor implementation="com.jetbrains.python.codeInsight.PyStdReferenceContributor"/>
+    <psi.referenceContributor implementation="com.jetbrains.python.codeInsight.PyStdReferenceContributor" language="Python"/>
     <psi.referenceContributor implementation="com.jetbrains.python.testing.pyTestFixtures.PyTestFixtureReferenceContributor" language="Python"/>
 
     <applicationService serviceInterface="com.jetbrains.python.documentation.PythonDocumentationMap"
@@ -556,8 +556,10 @@
     <search.optionContributor implementation="com.jetbrains.python.PySearchableOptionContributor"/>
     <moduleService serviceInterface="com.jetbrains.python.documentation.PyDocumentationSettings"
                    serviceImplementation="com.jetbrains.python.documentation.PyDocumentationSettings"/>
-    <psi.referenceContributor implementation="com.jetbrains.python.documentation.docstrings.DocStringReferenceContributor"/>
-    <psi.referenceContributor implementation="com.jetbrains.python.codeInsight.PythonFormattedStringReferenceContributor"/>
+    <psi.referenceContributor implementation="com.jetbrains.python.documentation.docstrings.DocStringReferenceContributor"
+                              language="Python"/>
+    <psi.referenceContributor implementation="com.jetbrains.python.codeInsight.PythonFormattedStringReferenceContributor"
+                              language="Python"/>
     <completion.contributor language="Python" implementationClass="com.jetbrains.python.documentation.docstrings.DocStringTagCompletionContributor"/>
     <completion.contributor language="Python" implementationClass="com.jetbrains.python.documentation.docstrings.DocStringSectionHeaderCompletionContributor"/>