diff --git a/moonscript/parse.lua b/moonscript/parse.lua
index b6f7d7c..47b09dd 100644
--- a/moonscript/parse.lua
+++ b/moonscript/parse.lua
@@ -306,7 +306,7 @@ local build_grammar = wrap(function()
 		Callable = Name + Parens / mark"parens",
 		Parens = sym"(" * Exp * sym")",
 
-		FnArgs = symx"(" * Ct(ExpList^-1) * sym")",
+		FnArgs = symx"(" * Ct(ExpList^-1) * sym")" + sym"!" * -P"=" * Ct"",
 
 		-- chain that starts with colon expression (for precedence over table literal)
 		ColonChain = 
diff --git a/tests/inputs/syntax.moon b/tests/inputs/syntax.moon
index d99cfc0..0c4cdc6 100644
--- a/tests/inputs/syntax.moon
+++ b/tests/inputs/syntax.moon
@@ -167,4 +167,14 @@ what whack - 5
 
 x = hello - world - something
 
+hello!
+hello.world!
+
+hello!.something
+what!["ofefe"]
+
+what! the! heck!
+
+
+
 
diff --git a/tests/outputs/syntax.lua b/tests/outputs/syntax.lua
index 23e472d..af8a14a 100644
--- a/tests/outputs/syntax.lua
+++ b/tests/outputs/syntax.lua
@@ -123,4 +123,9 @@ _ = 5 + what(wack)
 what(whack + 5)
 _ = 5 - what(wack)
 what(whack - 5)
-x = hello - world - something
\ No newline at end of file
+x = hello - world - something
+hello()
+hello.world()
+_ = hello().something
+_ = what()["ofefe"]
+what()(the()(heck()))
\ No newline at end of file