diff --git a/src/wren_io.c b/src/wren_io.c
index c583b28b..a04ed032 100644
--- a/src/wren_io.c
+++ b/src/wren_io.c
@@ -120,11 +120,9 @@ static void ioRead(WrenVM* vm)
   char buffer[MAX_READ_LEN];
   char* result = fgets(buffer, MAX_READ_LEN, stdin);
 
-  if (result == NULL) {
-    // TODO: handle error.
+  if (result != NULL) {
+    wrenReturnString(vm, buffer, (int)strlen(buffer));
   }
-
-  wrenReturnString(vm, buffer, (int)strlen(buffer));
 }
 
 static void ioClock(WrenVM* vm)
diff --git a/test/io/read_eof.wren b/test/io/read_eof.wren
new file mode 100644
index 00000000..07fd65c1
--- /dev/null
+++ b/test/io/read_eof.wren
@@ -0,0 +1 @@
+IO.write(IO.read) // expect: null