diff --git a/mpc.c b/mpc.c
index 8b34cf4..fbecf1d 100644
--- a/mpc.c
+++ b/mpc.c
@@ -1691,7 +1691,7 @@ static void mpc_print_unretained(mpc_parser_t* p, bool force) {
   if (p->type == MPC_TYPE_FAIL)   { printf("<fail>"); }
   if (p->type == MPC_TYPE_LIFT)   { printf("<lift>"); }
   if (p->type == MPC_TYPE_EXPECT) {
-    printf(p->data.expect.m);
+    printf("%s", p->data.expect.m);
     /*mpc_print_unretained(p->data.expect.x, false);*/
   }
   
@@ -2039,9 +2039,6 @@ static mpc_val_t* mpca_grammar_lift(void) {
 }
 
 static mpc_val_t* mpca_grammar_fold_repeat(mpc_val_t* x, mpc_val_t* y) {
-  
-  printf("Got Repeat '%s'\n", (char*)y);
-  
   if (strcmp(y, "*") == 0) { free(y); return mpca_many(x); }
   if (strcmp(y, "+") == 0) { free(y); return mpca_many1(x); }
   if (strcmp(y, "?") == 0) { free(y); return mpca_maybe(x); }
@@ -2051,15 +2048,11 @@ static mpc_val_t* mpca_grammar_fold_repeat(mpc_val_t* x, mpc_val_t* y) {
 }
 
 static mpc_val_t* mpc_grammar_apply_string(mpc_val_t* x) {
-  mpc_parser_t* p = mpc_ast(mpc_string(mpcf_unescape(x)));
-  free(x);
-  return p;
+  return mpc_ast(mpc_string(mpcf_unescape(x)));
 }
 
-static mpc_val_t* mpc_grammar_apply_char(mpc_val_t* x) {
-  mpc_parser_t* p = mpc_ast(mpc_char(*(char*)mpcf_unescape(x)));
-  free(x);
-  return p;
+static mpc_val_t* mpc_grammar_apply_char(mpc_val_t* x) {;
+  return mpc_ast(mpc_char(*(char*)mpcf_unescape(x)));
 }
 
 static mpc_val_t* mpc_grammar_apply_regex(mpc_val_t* x) {
diff --git a/mpc.h b/mpc.h
index 13d3bdc..6265407 100644
--- a/mpc.h
+++ b/mpc.h
@@ -10,6 +10,7 @@
 #include <stdio.h>
 #include <stdbool.h>
 #include <stdint.h>
+#include <stdarg.h>
 
 /*
 ** Error Type
@@ -266,4 +267,4 @@ mpc_parser_t* mpca_and(int n, ...);
 mpc_parser_t* mpca_ends(mpc_parser_t* a);
 mpc_parser_t* mpca_grammar(const char* grammar, ...);
 
-#endif
\ No newline at end of file
+#endif
diff --git a/tests/ident.c b/tests/ident.c
deleted file mode 100644
index d5ca8bb..0000000
--- a/tests/ident.c
+++ /dev/null
@@ -1,38 +0,0 @@
-#include "../mpc.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-static bool string_eq(void* x, void* y) { return (strcmp(x, y) == 0); }
-static void string_print(void* x) { printf("'%s'", (char*)x); }
-
-bool suite_ident(void) {
-
-  /* ^[a-zA-Z_][a-zA-Z0-9_]*$ */
-  
-  mpc_parser_t* Ident = mpc_new();
-  
-  mpc_define(Ident, mpc_ends(
-      mpc_also(
-        mpc_either(mpc_alpha(), mpc_underscore()),
-        mpc_many1(mpc_or(3, mpc_alpha(), mpc_underscore(), mpc_digit()), mpcf_strfold),
-        free, mpcf_strfold
-      ),
-      free)
-  );
-  
-  mpc_print(Ident);
-  
-  mpc_test(Ident, "test", "test", string_eq, free, string_print);
-  mpc_test(Ident, "  blah", "", string_eq, free, string_print);
-  mpc_test(Ident, "anoth21er", "anoth21er", string_eq, free, string_print);
-  mpc_test(Ident, "du__de", "du__de", string_eq, free, string_print);
-  mpc_test(Ident, "some spaces", "", string_eq, free, string_print);
-  mpc_test(Ident, "", "", string_eq, free, string_print);
-  mpc_test(Ident, "18nums", "", string_eq, free, string_print);
-  
-  mpc_undefine(Ident);
-  mpc_delete(Ident);
-  
-  return true;
-}
diff --git a/tests/math.c b/tests/math.c
deleted file mode 100644
index 0cc067f..0000000
--- a/tests/math.c
+++ /dev/null
@@ -1,61 +0,0 @@
-#include "../mpc.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-static bool int_eq(void* x, void* y) {
-  return (*(int*)x == *(int*)y);
-}
-
-static void int_print(void* x) {
-  printf("'%i'", *((int*)x));
-}
-
-bool suite_math(void) {
-  
-  mpc_parser_t* Expr   = mpc_new();
-  mpc_parser_t* Factor = mpc_new();
-  mpc_parser_t* Term   = mpc_new();
-  mpc_parser_t* Maths  = mpc_new();
-
-  mpc_define(Expr, mpc_either(
-    mpc_and(3, mpcf_maths, Factor, mpc_oneof("*/"), Factor, free, free),
-    Factor
-  ));
-  
-  mpc_define(Factor, mpc_either(
-    mpc_and(3, mpcf_maths, Term, mpc_oneof("+-"), Term, free, free),
-    Term
-  ));
-  
-  mpc_define(Term, mpc_either(
-    mpc_int(),
-    mpc_parens(Expr, free)
-  ));
-  
-  mpc_define(Maths, mpc_ends(Expr, free));
-  
-  mpc_print(Expr);
-  mpc_print(Factor);
-  mpc_print(Term);
-  mpc_print(Maths);
-  
-  mpc_test(Maths, "1", (int[]){ 1 }, int_eq, free, int_print);
-  mpc_test(Maths, "(5)", (int[]){ 5 }, int_eq, free, int_print);
-  mpc_test(Maths, "(4*2)+5", (int[]){ 13 }, int_eq, free, int_print);
-  mpc_test(Maths, "a", (int[]){ 0 }, int_eq, free, int_print);
-  mpc_test(Maths, "2b+4", (int[]){ 2 }, int_eq, free, int_print);
-  
-  mpc_undefine(Expr);
-  mpc_undefine(Factor);
-  mpc_undefine(Term);
-  mpc_undefine(Maths);
-  
-  mpc_delete(Expr);
-  mpc_delete(Factor);
-  mpc_delete(Term);
-  mpc_delete(Maths);
-  
-  return true;
-  
-}