diff --git a/spsil.y b/spsil.y
index b4792c9..5380dca 100644
--- a/spsil.y
+++ b/spsil.y
@@ -7,8 +7,8 @@
 {
 	struct tree *n;
 }
-%token ALIAS DEFINE DO ELSE ENDIF ENDWHILE IF IRETURN LOAD  STORE STRCMP STRCPY THEN WHILE REG NUM ASSIGNOP ARITHOP1 ARITHOP2 RELOP LOGOP NOTOP ID BREAK CONTINUE
-%type<n> IF IRETURN LOAD STORE STRCMP STRCPY WHILE REG NUM ASSIGNOP ARITHOP1 ARITHOP2 RELOP LOGOP NOTOP ID stmtlist stmt expr ids ifpad whilepad BREAK CONTINUE
+%token ALIAS DEFINE DO ELSE ENDIF ENDWHILE IF IRETURN LOAD  STORE STRCMP STRCPY THEN WHILE HALT REG NUM ASSIGNOP ARITHOP1 ARITHOP2 RELOP LOGOP NOTOP ID BREAK CONTINUE
+%type<n> IF IRETURN LOAD STORE STRCMP STRCPY WHILE HALT REG NUM ASSIGNOP ARITHOP1 ARITHOP2 RELOP LOGOP NOTOP ID stmtlist stmt expr ids ifpad whilepad BREAK CONTINUE
 %left LOGOP
 %left RELOP  
 %left ARITHOP1		// + and -
@@ -115,7 +115,11 @@ stmt:		STRCPY '(' ids ',' ids ')' ';'		{
 							}
 							$$=$1;
 							}
+		|HALT ';'				{	
+							$$=$1;
+							}
 		;
+	
 				
 expr:		expr ARITHOP1 expr			{
 								$$=create_tree($2,$1,$3,NULL);