diff --git a/python/src/com/jetbrains/python/psi/impl/PyAssignmentStatementImpl.java b/python/src/com/jetbrains/python/psi/impl/PyAssignmentStatementImpl.java
index 93c431612cf0..a91cb53cc5a7 100644
--- a/python/src/com/jetbrains/python/psi/impl/PyAssignmentStatementImpl.java
+++ b/python/src/com/jetbrains/python/psi/impl/PyAssignmentStatementImpl.java
@@ -148,7 +148,14 @@ public class PyAssignmentStatementImpl extends PyElementImpl implements PyAssign
     
     PySequenceExpression rhs_tuple = null;
     PyExpression rhs_one = null;
-    if (rhs instanceof PySequenceExpression) rhs_tuple = (PySequenceExpression)rhs;
+    if (rhs instanceof PyParenthesizedExpression) {
+      PyExpression exp = ((PyParenthesizedExpression)rhs).getContainedExpression();
+      if (exp instanceof PyTupleExpression)
+        rhs_tuple = (PySequenceExpression)exp;
+      else
+        rhs_one = rhs;
+    }
+    else if (rhs instanceof PySequenceExpression) rhs_tuple = (PySequenceExpression)rhs;
     else if (rhs != null) rhs_one = rhs;
     //
     if (lhs_one != null) { // single LHS, single RHS (direct mapping) or multiple RHS (packing)
diff --git a/python/testData/psi/assignment/ParenthesizedTuple.py b/python/testData/psi/assignment/ParenthesizedTuple.py
new file mode 100644
index 000000000000..36a8ea4c10a0
--- /dev/null
+++ b/python/testData/psi/assignment/ParenthesizedTuple.py
@@ -0,0 +1 @@
+<dst1>a, <dst2>b = (<src1>1, <src2>2)
\ No newline at end of file
diff --git a/python/testSrc/com/jetbrains/python/PyAssignmentMappingTest.java b/python/testSrc/com/jetbrains/python/PyAssignmentMappingTest.java
index ec48f8d0dc6f..9020777e8d45 100644
--- a/python/testSrc/com/jetbrains/python/PyAssignmentMappingTest.java
+++ b/python/testSrc/com/jetbrains/python/PyAssignmentMappingTest.java
@@ -112,6 +112,30 @@ public class PyAssignmentMappingTest extends LightMarkedTestCase {
     }
   }
 
+  public void testParenthesizedTuple() throws Exception { //PY-2648
+    Map<String, PsiElement> marks = loadTest();
+    final int PAIR_NUM = 2;
+    assertEquals(PAIR_NUM*2, marks.size());
+    PsiElement[] srcs = new PsiElement[PAIR_NUM];
+    PsiElement[] dsts = new PsiElement[PAIR_NUM];
+    for (int i=0; i<PAIR_NUM; i+=1) {
+      PsiElement dst = marks.get("<dst" + String.valueOf(i + 1) + ">").getParent(); // ident -> target expr
+      assertTrue(dst instanceof PyTargetExpression);
+      dsts[i] = dst;
+      PsiElement src = marks.get("<src" + String.valueOf(i + 1) +">").getParent(); // ident -> target expr
+      assertTrue(src instanceof PyExpression);
+      srcs[i] = src;
+    }
+    PyAssignmentStatement stmt = (PyAssignmentStatement)srcs[0].getParent().getParent().getParent(); // tuple expr -> assignment
+    List<Pair<PyExpression, PyExpression>> mapping = stmt.getTargetsToValuesMapping();
+    assertEquals(PAIR_NUM, mapping.size());
+    for (int i=0; i<PAIR_NUM; i+=1) {
+      Pair<PyExpression, PyExpression> pair = mapping.get(i);
+      assertEquals(dsts[i], pair.getFirst());
+      assertEquals(srcs[i], pair.getSecond());
+    }
+  }
+
   public void testTuplePack() throws Exception {
     Map<String, PsiElement> marks = loadTest();
     final int SRC_NUM = 2;