diff --git a/src/dlist.c b/src/dlist.c
index 31c508c..12ee743 100644
--- a/src/dlist.c
+++ b/src/dlist.c
@@ -33,14 +33,14 @@ char *dlist_repr(LakeDottedList *dlist)
 	char *s2;
 	if (dlist->head) {
         for (i = 0; i < LIST_N(dlist->head); ++i) {
-		    s2 = repr(LIST_VAL(dlist->head, i));
+		    s2 = lake_repr(LIST_VAL(dlist->head, i));
 		    g_string_append(s, s2);
 		    g_free(s2);
 		    if (i != LIST_N(dlist->head) - 1) g_string_append(s, " ");
         }
     }
 	g_string_append(s, " . ");
-    s2 = repr(dlist->tail);
+    s2 = lake_repr(dlist->tail);
     g_string_append(s, s2);
     g_free(s2);
 	g_string_append(s, ")");
diff --git a/src/eval.c b/src/eval.c
index 445a693..1181ca9 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -19,7 +19,7 @@ typedef LakeVal *(*special_form_handler)(LakeCtx *ctx, Env *env, LakeList *expr)
 
 static void invalid_special_form(LakeList *expr, char *detail)
 {
-    ERR("malformed special form, %s: %s", detail, repr(VAL(expr)));
+    ERR("malformed special form, %s: %s", detail, lake_repr(VAL(expr)));
 }
 
 /* expr begins with the symbol "quote" so the quoted value is the 2nd value */
@@ -376,7 +376,7 @@ LakeVal *apply(LakeCtx *ctx, LakeVal *fnVal, LakeList *args)
         result = eval_exprs1(ctx, env, fn->body);
     }
     else {
-        ERR("not a function: %s", repr(fnVal));
+        ERR("not a function: %s", lake_repr(fnVal));
     }
     return result;
 }
diff --git a/src/fn.c b/src/fn.c
index 1081741..9dd584d 100644
--- a/src/fn.c
+++ b/src/fn.c
@@ -42,19 +42,19 @@ char *fn_repr(LakeFn *fn)
         free(s2);
 	}
 	else if (fn->varargs) {
-        s2 = repr(VAL(fn->varargs));
+        s2 = lake_repr(VAL(fn->varargs));
         g_string_append(s, s2);
         free(s2);
     }
     else {
-        s2 = repr(VAL(fn->params));
+        s2 = lake_repr(VAL(fn->params));
         g_string_append(s, s2);
         free(s2);
 	}
     g_string_append(s, " ");
     int i;
     for (i = 0; i < LIST_N(fn->body); ++i) {
-		s2 = repr(LIST_VAL(fn->body, i));
+		s2 = lake_repr(LIST_VAL(fn->body, i));
 		g_string_append(s, s2);
 		g_free(s2);
 		if (i != LIST_N(fn->body) - 1) g_string_append(s, " ");
diff --git a/src/fn.h b/src/fn.h
index 1f43849..053ad2c 100644
--- a/src/fn.h
+++ b/src/fn.h
@@ -17,6 +17,4 @@
 LakeFn *fn_make(LakeList *params, LakeSym *varargs, LakeList *body, Env *closure);
 char *fn_repr(LakeFn *fn);
 
-/* TODO: function operations */
-
 #endif
\ No newline at end of file
diff --git a/src/lake.c b/src/lake.c
index 5d2d43c..21a8164 100644
--- a/src/lake.c
+++ b/src/lake.c
@@ -91,7 +91,7 @@ static LakeVal *prompt_read(LakeCtx *ctx, Env *env, char *prompt)
     return result;
 }
 
-char *repr(LakeVal *expr)
+char *lake_repr(LakeVal *expr)
 {
     if (expr == NULL) return g_strdup("(null)");
 
diff --git a/src/lake.h b/src/lake.h
index a5a4c99..150ac14 100644
--- a/src/lake.h
+++ b/src/lake.h
@@ -162,7 +162,7 @@ typedef struct lake_comment LakeComment;
 
 gboolean lake_is(LakeVal *a, LakeVal *b);
 gboolean lake_equal(LakeVal *a, LakeVal *b);
-char *repr(LakeVal *val);
+char *lake_repr(LakeVal *val);
 
 #include <stdio.h>
 
diff --git a/src/list.c b/src/list.c
index 86c9de8..ebe9306 100644
--- a/src/list.c
+++ b/src/list.c
@@ -187,7 +187,7 @@ char *list_repr(LakeList *list)
     int i;
 	char *s2;
     for (i = 0; i < LIST_N(list); ++i) {
-		s2 = repr(LIST_VAL(list, i));
+		s2 = lake_repr(LIST_VAL(list, i));
 		g_string_append(s, s2);
 		g_free(s2);
 		if (i != LIST_N(list) - 1) g_string_append(s, " ");
diff --git a/src/primitive.c b/src/primitive.c
index 934bc9f..b1b780e 100644
--- a/src/primitive.c
+++ b/src/primitive.c
@@ -105,11 +105,11 @@ static LakeVal *_not(LakeCtx *ctx, LakeList *args)
     return VAL(not);
 }
 
-#define ENSURE_INT(x, i) do {                                      \
-        if (!IS(TYPE_INT, x)) {                                    \
-            ERR("argument %zu is not an integer: %s", i, repr(x)); \
-            return NULL;                                           \
-        }                                                          \
+#define ENSURE_INT(x, i) do {                                           \
+        if (!IS(TYPE_INT, x)) {                                         \
+            ERR("argument %zu is not an integer: %s", i, lake_repr(x)); \
+            return NULL;                                                \
+        }                                                               \
     } while (0)
 
 static LakeVal *_add(LakeCtx *ctx, LakeList *args)