diff --git a/clang/lib/Format/ContinuationIndenter.cpp b/clang/lib/Format/ContinuationIndenter.cpp
--- a/clang/lib/Format/ContinuationIndenter.cpp
+++ b/clang/lib/Format/ContinuationIndenter.cpp
@@ -1348,16 +1348,20 @@
                    State.Stack.back().LastSpace);
     }
 
-    // If BreakBeforeBinaryOperators is set, un-indent a bit to account for
-    // the operator and keep the operands aligned
-    if (Style.AlignOperands == FormatStyle::OAS_AlignAfterOperator &&
-        Previous &&
+    if (Previous &&
         (Previous->getPrecedence() == prec::Assignment ||
          Previous->is(tok::kw_return) ||
          (*I == prec::Conditional && Previous->is(tok::question) &&
           Previous->is(TT_ConditionalExpr))) &&
-        !Newline)
-      NewParenState.UnindentOperator = true;
+        !Newline) {
+      // If BreakBeforeBinaryOperators is set, un-indent a bit to account for
+      // the operator and keep the operands aligned
+      if (Style.AlignOperands == FormatStyle::OAS_AlignAfterOperator)
+        NewParenState.UnindentOperator = true;
+      // Mark indentation as alignment if the expression is aligned.
+      if (Style.AlignOperands != FormatStyle::OAS_DontAlign)
+        NewParenState.IsAligned = true;
+    }
 
     // Do not indent relative to the fake parentheses inserted for "." or "->".
     // This is a special case to make the following to statements consistent:
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -11259,6 +11259,23 @@
                "\t}\n"
                "};",
                Tab);
+  Tab.AlignOperands = FormatStyle::OAS_Align;
+  verifyFormat("int aaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb +\n"
+               "                 cccccccccccccccccccc;",
+               Tab);
+  // no alignment
+  verifyFormat("int aaaaaaaaaa =\n"
+               "\tbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
+               Tab);
+  verifyFormat("return aaaaaaaaaaaaaaaa ? 111111111111111\n"
+               "       : bbbbbbbbbbbbbb ? 222222222222222\n"
+               "                        : 333333333333333;",
+               Tab);
+  Tab.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
+  Tab.AlignOperands = FormatStyle::OAS_AlignAfterOperator;
+  verifyFormat("int aaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb\n"
+               "               + cccccccccccccccccccc;",
+               Tab);
 }
 
 TEST_F(FormatTest, ZeroTabWidth) {