diff --git a/vvm/src/main.c b/vvm/src/main.c
index 1dc967f..fe23024 100644
--- a/vvm/src/main.c
+++ b/vvm/src/main.c
@@ -11,7 +11,7 @@ int main(int argc, char** argv){
     program prog;
     if(argc != 2)
         die(127, "Please specify exactly one file to execute.");
-    prog = vm_parse(argv[1]);
+    prog = vm_compile(argv[1]);
     vm_execute(prog.code, prog.entrypoint, 0, prog.length);
     free(prog.code);
     return 0;
diff --git a/vvm/src/vm.c b/vvm/src/vm.c
index e74b6ae..71827f6 100644
--- a/vvm/src/vm.c
+++ b/vvm/src/vm.c
@@ -30,8 +30,8 @@ static inline void disassemble(int sp, int fp, int ip, int opcode, instruction*
 void vm_execute(int code[], int ip, int datasize, unsigned long length){
         int* data = (int *) alloca((size_t)datasize * sizeof(int));
         int stack[MAX_SIZE];
-        int sp = -1;
-        int fp = -1;
+        register int sp = -1;
+        register int fp = -1;
         int nargs, addr, a, b;
         instruction* ins = setup_instructions();
         while(ip < length){
@@ -162,7 +162,7 @@ void vm_execute(int code[], int ip, int datasize, unsigned long length){
         return;
 }
 
-program vm_parse(char *filename){
+program vm_compile(char *filename){
     FILE* file = fopen(filename, "r");
     char* line = NULL;
     char** command = NULL;
diff --git a/vvm/src/vm.h b/vvm/src/vm.h
index e66298a..c635afa 100644
--- a/vvm/src/vm.h
+++ b/vvm/src/vm.h
@@ -37,7 +37,7 @@ void vm_execute(int[], int, int, unsigned long);
  * @brief vm_parse
  * @param file -> filename
  */
-program vm_parse(char*);
+program vm_compile(char*);
 
 /**
  * @brief str_split
diff --git a/vvm/test/factorial b/vvm/test/factorial
index 3d4cea4..46ce3e4 100644
--- a/vvm/test/factorial
+++ b/vvm/test/factorial
@@ -15,5 +15,7 @@ RET
 ICONST 12
 CALL 0 1
 IPRINT
+ICONST 10 
+PRINT 
 HALT