diff --git a/docs/grammar.abnf b/docs/grammar.abnf
index 4677e66..855c8d0 100644
--- a/docs/grammar.abnf
+++ b/docs/grammar.abnf
@@ -38,7 +38,8 @@ decorated-decl 		= pragma (proc-decl / symbol-decl)
 
 ; Statements
 while-stmt 		= "while" expr *stmt "end"
-if-expr 		= "if" expr *stmt "end"
+elif-else		= ["elif" expr *stmt] ["else" *stmt]
+if-expr 		= "if" expr *stmt elif-else "end"
 break-expr 		= "break" [expr]
 return-stmt 	= "return" [expr]
 yield-stmt 		= "yield" [expr]