diff --git a/Changelog.md b/Changelog.md
index 49fbf8f12..d90cd3f65 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,7 +1,7 @@
 ### 0.4.17 (unreleased)
 
 Features:
- * Code Generator: Added ``.sig`` member on external function types to retrieve their signature.
+ * Code Generator: Added ``.selector`` member on external function types to retrieve their signature.
  * Optimizer: Add new optimization step to remove unused ``JUMPDEST``s.
  * Type Checker: Display helpful warning for unused function arguments/return parameters.
  * Type Checker: Do not show the same error multiple times for events.
diff --git a/libsolidity/ast/Types.cpp b/libsolidity/ast/Types.cpp
index 5aa52383b..705d0f7f2 100644
--- a/libsolidity/ast/Types.cpp
+++ b/libsolidity/ast/Types.cpp
@@ -2438,7 +2438,7 @@ MemberList::MemberMap FunctionType::nativeMembers(ContractDefinition const*) con
 		MemberList::MemberMap members;
 		if (m_kind == Kind::External)
 			members.push_back(MemberList::Member(
-				"sig",
+				"selector",
 				make_shared<FixedBytesType>(4)
 			));
 		if (m_kind != Kind::BareDelegateCall && m_kind != Kind::DelegateCall)
diff --git a/libsolidity/codegen/ExpressionCompiler.cpp b/libsolidity/codegen/ExpressionCompiler.cpp
index b7aadc128..631a25ff9 100644
--- a/libsolidity/codegen/ExpressionCompiler.cpp
+++ b/libsolidity/codegen/ExpressionCompiler.cpp
@@ -1068,7 +1068,7 @@ bool ExpressionCompiler::visit(MemberAccess const& _memberAccess)
 			solAssert(false, "Invalid member access to integer");
 		break;
 	case Type::Category::Function:
-		if (member == "sig")
+		if (member == "selector")
 		{
 			m_context << Instruction::SWAP1 << Instruction::POP;
 			/// need to store store it as bytes4
diff --git a/test/libsolidity/SolidityEndToEndTest.cpp b/test/libsolidity/SolidityEndToEndTest.cpp
index f3d0fde36..661d184a0 100644
--- a/test/libsolidity/SolidityEndToEndTest.cpp
+++ b/test/libsolidity/SolidityEndToEndTest.cpp
@@ -10056,16 +10056,16 @@ BOOST_AUTO_TEST_CASE(function_types_sig)
 	char const* sourceCode = R"(
 		contract C {
 			function f() returns (bytes4) {
-				return this.f.sig;
+				return this.f.selector;
 			}
 			function g() returns (bytes4) {
 				function () external returns (bytes4) fun = this.f;
-				return fun.sig;
+				return fun.selector;
 			}
 			function h() returns (bytes4) {
 				function () external returns (bytes4) fun = this.f;
 				var funvar = fun;
-				return funvar.sig;
+				return funvar.selector;
 			}
 		}
 	)";
diff --git a/test/libsolidity/SolidityNameAndTypeResolution.cpp b/test/libsolidity/SolidityNameAndTypeResolution.cpp
index 6576634fe..9f33c5b37 100644
--- a/test/libsolidity/SolidityNameAndTypeResolution.cpp
+++ b/test/libsolidity/SolidityNameAndTypeResolution.cpp
@@ -6290,34 +6290,34 @@ BOOST_AUTO_TEST_CASE(function_types_sig)
 	char const* text = R"(
 		contract C {
 			function f() returns (bytes4) {
-				return f.sig;
+				return f.selector;
 			}
 		}
 	)";
-	CHECK_ERROR(text, TypeError, "Member \"sig\" not found");
+	CHECK_ERROR(text, TypeError, "Member \"selector\" not found");
 	text = R"(
 		contract C {
 			function g() internal {
 			}
 			function f() returns (bytes4) {
-				return g.sig;
+				return g.selector;
 			}
 		}
 	)";
-	CHECK_ERROR(text, TypeError, "Member \"sig\" not found");
+	CHECK_ERROR(text, TypeError, "Member \"selector\" not found");
 	text = R"(
 		contract C {
 			function f() returns (bytes4) {
 				function () g;
-				return g.sig;
+				return g.selector;
 			}
 		}
 	)";
-	CHECK_ERROR(text, TypeError, "Member \"sig\" not found");
+	CHECK_ERROR(text, TypeError, "Member \"selector\" not found");
 	text = R"(
 		contract C {
 			function f() returns (bytes4) {
-				return this.f.sig;
+				return this.f.selector;
 			}
 		}
 	)";
@@ -6325,7 +6325,7 @@ BOOST_AUTO_TEST_CASE(function_types_sig)
 	text = R"(
 		contract C {
 			function f() external returns (bytes4) {
-				return this.f.sig;
+				return this.f.selector;
 			}
 		}
 	)";
@@ -6336,7 +6336,7 @@ BOOST_AUTO_TEST_CASE(function_types_sig)
 			}
 			function f() external returns (bytes4) {
 				var g = this.h;
-				return g.sig;
+				return g.selector;
 			}
 		}
 	)";
@@ -6347,7 +6347,7 @@ BOOST_AUTO_TEST_CASE(function_types_sig)
 			}
 			function f() external returns (bytes4) {
 				function () external g = this.h;
-				return g.sig;
+				return g.selector;
 			}
 		}
 	)";
@@ -6359,7 +6359,7 @@ BOOST_AUTO_TEST_CASE(function_types_sig)
 			function f() external returns (bytes4) {
 				function () external g = this.h;
 				var i = g;
-				return i.sig;
+				return i.selector;
 			}
 		}
 	)";