diff --git a/test/libsolidity/InlineAssembly.cpp b/test/libsolidity/InlineAssembly.cpp
index c2dac287b..9ee848678 100644
--- a/test/libsolidity/InlineAssembly.cpp
+++ b/test/libsolidity/InlineAssembly.cpp
@@ -182,12 +182,18 @@ BOOST_AUTO_TEST_CASE(error_tag)
 	BOOST_CHECK(successAssemble("{ invalidJumpLabel }"));
 }
 
-BOOST_AUTO_TEST_CASE(inline_assembly_shadowed_instruction)
+BOOST_AUTO_TEST_CASE(inline_assembly_shadowed_instruction_declaration)
 {
 	// Error message: "Cannot use instruction names for identifier names."
 	BOOST_CHECK(!successAssemble("{ let gas := 1 }"));
 }
 
+BOOST_AUTO_TEST_CASE(inline_assembly_shadowed_instruction_assignment)
+{
+	// Error message: "Cannot use instruction names for identifier names."
+	BOOST_CHECK(!successAssemble("{ 2 =: gas }"));
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 
 }