diff --git a/docs/TODO.txt b/docs/TODO.txt
index ac7c13d..ab42494 100644
--- a/docs/TODO.txt
+++ b/docs/TODO.txt
@@ -13,6 +13,7 @@ DONE: truthiness rethink
 DONE: string concat with the + operator
 DONE: increment & decrement operators
 
+TODO: A way to check the type of a variable (typeOf keyword)
 TODO: a = b = c = 1; ?
 TODO: are compounds shallow or deep copies?
 TODO: functions, and all of their features
diff --git a/source/compiler.c b/source/compiler.c
index ed71dae..b9a7b2e 100644
--- a/source/compiler.c
+++ b/source/compiler.c
@@ -189,7 +189,6 @@ static void writeCompilerWithJumps(Compiler* compiler, Node* node, void* breakAd
 
 	//determine node type
 	switch(node->type) {
-		//TODO: more types, like variables, etc.
 		case NODE_ERROR: {
 			fprintf(stderr, ERROR "[Internal] NODE_ERROR encountered in writeCompilerWithJumps()\n" RESET);
 			compiler->bytecode[compiler->count++] = OP_EOF; //1 byte
diff --git a/source/interpreter.c b/source/interpreter.c
index 26fc30a..3657d40 100644
--- a/source/interpreter.c
+++ b/source/interpreter.c
@@ -709,7 +709,7 @@ static void execInterpreter(Interpreter* interpreter) {
 				interpreter->scope = popScope(interpreter->scope);
 			break;
 
-			//TODO: custom type declarations
+			//TODO: custom type declarations?
 
 			case OP_VAR_DECL:
 			case OP_VAR_DECL_LONG:
diff --git a/source/keyword_types.h b/source/keyword_types.h
index 561dd6a..62bcaab 100644
--- a/source/keyword_types.h
+++ b/source/keyword_types.h
@@ -9,5 +9,4 @@ typedef struct {
 
 extern KeywordType keywordTypes[];
 
-//for debugging
 char* findKeywordByType(TokenType type);
diff --git a/source/literal.c b/source/literal.c
index 02492af..dace79b 100644
--- a/source/literal.c
+++ b/source/literal.c
@@ -248,7 +248,7 @@ void printLiteralCustom(Literal literal, void (printFn)(const char*)) {
 
 				case LITERAL_FUNCTION:
 					printToBuffer("function");
-					//TODO
+					//TODO: how to print a function
 				break;
 
 				case LITERAL_IDENTIFIER: