diff --git a/src/test/nbt_helpers.cpp b/src/test/nbt_helpers.cpp
index 8abcced..b576460 100644
--- a/src/test/nbt_helpers.cpp
+++ b/src/test/nbt_helpers.cpp
@@ -98,15 +98,15 @@ int main(){
     // int64 ###########################################################
     // read successfully
     currentPosition = 1;
-    ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).value == 2242829044932683046L);
+    ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).value == 2242829044932683046);
     ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).isError == false);
     // begin of data
     currentPosition = 0;
-    ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).value == 2170488872094606374L);
+    ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).value == 2170488872094606373);
     ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).isError == false);
     // end of data
     currentPosition = 2;
-    ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).value == 2315169217770759719L);
+    ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).value == 2315169217770759719);
     ASSERT(NBT::helper::readInt64(data, dataSize, currentPosition).isError == false);
     // partially out of bounds
     currentPosition = 3;