diff --git a/src/Backend/C/FromCore.hs b/src/Backend/C/FromCore.hs
index 467e63ef3..a10545fee 100644
--- a/src/Backend/C/FromCore.hs
+++ b/src/Backend/C/FromCore.hs
@@ -1369,7 +1369,7 @@ cTypeCon c
 
 cPrimCanBeBoxed :: String -> Bool
 cPrimCanBeBoxed prim
-  = prim `elem` ["kk_char_t", "int64_t", "int16_t", "int32_t", "float", "double", "intptr_t", "kk_ssize_t"]
+  = prim `elem` ["kk_char_t", "int64_t", "int8_t", "int16_t", "int32_t", "float", "double", "intptr_t", "kk_ssize_t"]
 
 
 ---------------------------------------------------------------------------------
diff --git a/test/cgen/box-int8.kk b/test/cgen/box-int8.kk
new file mode 100644
index 000000000..e6362402f
--- /dev/null
+++ b/test/cgen/box-int8.kk
@@ -0,0 +1,3 @@
+fun main()
+  val v = vector-init(10) fn(i) i.int8 
+  v[0].int.println
\ No newline at end of file
diff --git a/test/cgen/box-int8.kk.out b/test/cgen/box-int8.kk.out
new file mode 100644
index 000000000..c22708346
--- /dev/null
+++ b/test/cgen/box-int8.kk.out
@@ -0,0 +1 @@
+0
\ No newline at end of file