diff --git a/cache/src/main/antlr4/net/runelite/cache/script/assembler/rs2asm.g4 b/cache/src/main/antlr4/net/runelite/cache/script/assembler/rs2asm.g4
index 4fdbb4e199..1c22be6713 100644
--- a/cache/src/main/antlr4/net/runelite/cache/script/assembler/rs2asm.g4
+++ b/cache/src/main/antlr4/net/runelite/cache/script/assembler/rs2asm.g4
@@ -24,7 +24,7 @@
  */
 grammar rs2asm;
 
-prog: (header NEWLINE+)* (line NEWLINE+)+ ;
+prog: NEWLINE* (header NEWLINE+)* (line NEWLINE+)+ ;
 
 header: id | int_stack_count | string_stack_count | int_var_count | string_var_count ;