diff --git a/python/src/com/jetbrains/python/inspections/PyRedeclarationInspection.java b/python/src/com/jetbrains/python/inspections/PyRedeclarationInspection.java
index e5e421990a68..f56753a8fa8b 100644
--- a/python/src/com/jetbrains/python/inspections/PyRedeclarationInspection.java
+++ b/python/src/com/jetbrains/python/inspections/PyRedeclarationInspection.java
@@ -79,7 +79,7 @@ public class PyRedeclarationInspection extends PyInspection {
 
     @Override
     public void visitPyTargetExpression(final PyTargetExpression node) {
-      if (PyNames.UNDERSCORE.equals(node.getText())) return;
+      if (node.isQualified() || PyNames.UNDERSCORE.equals(node.getText())) return;
       final ScopeOwner owner = ScopeUtil.getScopeOwner(node);
       if (owner instanceof PyFile || owner instanceof PyClass) {
         processElement(node);
diff --git a/python/testData/inspections/PyRedeclarationInspection/qualifiedTarget.py b/python/testData/inspections/PyRedeclarationInspection/qualifiedTarget.py
new file mode 100644
index 000000000000..4a0ed38b7df4
--- /dev/null
+++ b/python/testData/inspections/PyRedeclarationInspection/qualifiedTarget.py
@@ -0,0 +1,3 @@
+a = 10
+b = 10
+a.b = 10
\ No newline at end of file
diff --git a/python/testSrc/com/jetbrains/python/inspections/PyRedeclarationInspectionTest.java b/python/testSrc/com/jetbrains/python/inspections/PyRedeclarationInspectionTest.java
index 69f439e8e4a6..e08b2d7210a2 100644
--- a/python/testSrc/com/jetbrains/python/inspections/PyRedeclarationInspectionTest.java
+++ b/python/testSrc/com/jetbrains/python/inspections/PyRedeclarationInspectionTest.java
@@ -125,6 +125,11 @@ public class PyRedeclarationInspectionTest extends PyInspectionTestCase {
     doTest();
   }
 
+  // PY-26591
+  public void testQualifiedTarget() {
+    doTest();
+  }
+
   @NotNull
   @Override
   protected Class<? extends PyInspection> getInspectionClass() {