diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index b5b4eb9e748..ba43bc585f6 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -1902,7 +1902,7 @@ namespace ts {
 
             function buildTypeParameterDisplayFromSymbol(symbol: Symbol, writer: SymbolWriter, enclosingDeclaraiton?: Node, flags?: TypeFormatFlags) {
                 let targetSymbol = getTargetSymbol(symbol);
-                if (targetSymbol.flags & SymbolFlags.Class || targetSymbol.flags & SymbolFlags.Interface) {
+                if (targetSymbol.flags & SymbolFlags.Class || targetSymbol.flags & SymbolFlags.Interface || targetSymbol.flags & SymbolFlags.TypeAlias) {
                     buildDisplayForTypeParametersAndDelimiters(getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol), writer, enclosingDeclaraiton, flags);
                 }
             }
diff --git a/src/services/services.ts b/src/services/services.ts
index 9c00b92a063..14374e58192 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -4040,6 +4040,7 @@ namespace ts {
                 displayParts.push(keywordPart(SyntaxKind.TypeKeyword));
                 displayParts.push(spacePart());
                 addFullSymbolName(symbol);
+                writeTypeParametersOfSymbol(symbol, sourceFile);
                 displayParts.push(spacePart());
                 displayParts.push(operatorPart(SyntaxKind.EqualsToken));
                 displayParts.push(spacePart());
@@ -4093,6 +4094,16 @@ namespace ts {
                         }
                         addRange(displayParts, signatureToDisplayParts(typeChecker, signature, sourceFile, TypeFormatFlags.WriteTypeArgumentsOfSignature));
                     }
+                    else {
+                        // Type  aliash type parameter
+                        // For example
+                        //      type list<T> = T[];  // Both T will go through same code path
+                        let declaration = <TypeAliasDeclaration>getDeclarationOfKind(symbol, SyntaxKind.TypeParameter).parent;
+                        displayParts.push(keywordPart(SyntaxKind.TypeKeyword));
+                        displayParts.push(spacePart());
+                        addFullSymbolName(declaration.symbol);
+                        writeTypeParametersOfSymbol(declaration.symbol, sourceFile);
+                    }
                 }
             }
             if (symbolFlags & SymbolFlags.EnumMember) {