diff --git a/makefile b/makefile
index 1058471..13c10d3 100644
--- a/makefile
+++ b/makefile
@@ -6,8 +6,8 @@
 # make uninstall
 
 ## C compiler
-CC=tcc # much faster compilation than gcc
-COMPILER_FLAGS=#-g3 -Wall -Wextra -Wconversion -Wdouble-promotion -Wno-unused-parameter -Wno-unused-function -Wno-sign-conversion -fsanitize=undefined 
+CC=gcc # much faster compilation than gcc
+COMPILER_FLAGS=#-Wall -Wextra -Wconversion -Wdouble-promotion -Wno-unused-parameter -Wno-unused-function -Wno-sign-conversion -fsanitize=undefined # -g3 
 # exclude: -fsanitize-trap, because I'm using an old version of gcc and couldn't bother getting a new one.
 ## ^ from <https://nullprogram.com/blog/2023/04/29/>
 ## <https://news.ycombinator.com/item?id=35758898>
@@ -35,8 +35,12 @@ STYLE_BLUEPRINT=webkit
 FORMATTER=clang-format -i -style=$(STYLE_BLUEPRINT)
 
 build: $(SRC)
-	$(CC) $(COMPILER_FLAGS)  $(INCS) $(SRC) $(MPC) -o mumble $(LIBS)
+	$(CC) $(COMPILER_FLAGS)  $(INCS) $(SRC) $(MPC) -o mumble $(LIBS) $(DEBUG)
 
 format: $(SRC)
 	$(FORMATTER) $(SRC)
 
+debug: 
+	gcc -I/usr/include/editline ./src/mumble.c ./src/mpc/mpc.c -o mumble -lm -ledit -g
+	# valgrind --tool=memcheck --leak-check=yes  --show-leak-kinds=all ./mumble
+	valgrind --tool=memcheck --leak-check=yes ./mumble
diff --git a/mumble b/mumble
index 9a6a7d7..4d0d09b 100755
Binary files a/mumble and b/mumble differ
diff --git a/src/mumble.c b/src/mumble.c
index 0ad914f..89c5008 100644
--- a/src/mumble.c
+++ b/src/mumble.c
@@ -815,6 +815,7 @@ lispval* evaluate_lispval(lispval* l, lispenv* env)
 				// builtin_functions(operation->sym, l, env);
         delete_lispval(f);
         delete_lispval(operands);
+				// delete_lispval(temp);
 				if(VERBOSE) printfln("Returning");
         return answer;
     }
@@ -921,10 +922,12 @@ int main(int argc, char** argv)
                 delete_lispval(l);
 								// if(VERBOSE) printfln("Deleted that ^ lispval");
 								// ^ I do not understand how the memory in l is freed.
+							  // delete the ast
+								mpc_ast_delete(ast);
             } else {
                 /* Otherwise Print the Error */
                 mpc_err_print(result.error);
-                // mpc_err_delete(result.error);
+                mpc_err_delete(result.error);
             }
             add_history(input);
             // can't add if input is NULL