diff --git a/src/lib/nbt.cpp b/src/lib/nbt.cpp
index 73a2baf..3fb198e 100644
--- a/src/lib/nbt.cpp
+++ b/src/lib/nbt.cpp
@@ -319,7 +319,10 @@ namespace NBT {
         }
 
         void writeInt8Array(std::vector<uint8_t>* destination, std::vector<int8_t> data) {
-            
+            writeInt32(destination, data.size());
+            for(int8_t datum: data){
+                destination->push_back(datum);
+            }
         }
 
         void writeInt8Array(std::vector<uint8_t>* destination, int8_t data[], uint32_t dataSize) {
diff --git a/src/test/nbt_helpers.cpp b/src/test/nbt_helpers.cpp
index 6ff7f19..c2eabcc 100644
--- a/src/test/nbt_helpers.cpp
+++ b/src/test/nbt_helpers.cpp
@@ -219,6 +219,18 @@ int main(){
         int8ArrayTestOutput->at(6) == 3 &&
         int8ArrayTestOutput->at(7) == 4
     );
+    int8ArrayTestOutput->clear();
+    NBT::helper::writeInt8Array(int8ArrayTestOutput, std::vector<int8_t>({1,2,3,4}));
+    ASSERT(
+        int8ArrayTestOutput->at(0) == 0 &&
+        int8ArrayTestOutput->at(1) == 0 &&
+        int8ArrayTestOutput->at(2) == 0 &&
+        int8ArrayTestOutput->at(3) == 4 &&
+        int8ArrayTestOutput->at(4) == 1 &&
+        int8ArrayTestOutput->at(5) == 2 &&
+        int8ArrayTestOutput->at(6) == 3 &&
+        int8ArrayTestOutput->at(7) == 4
+    );
     delete int8ArrayTestOutput;
     std::cout << "Passed writeInt8Array NBT helper test" << std::endl;