diff --git a/nac3core/irrt/irrt/ndarray/basic.hpp b/nac3core/irrt/irrt/ndarray/basic.hpp
index 9e0565b9..ed7009e3 100644
--- a/nac3core/irrt/irrt/ndarray/basic.hpp
+++ b/nac3core/irrt/irrt/ndarray/basic.hpp
@@ -223,10 +223,9 @@ bool is_c_contiguous(const NDArray<SizeT>* ndarray) {
         return false;
     }
 
-    for (SizeT i = 1; i < ndarray->ndims; i++) {
-        SizeT axis_i = ndarray->ndims - i - 1;
-        if (ndarray->strides[axis_i] !=
-            ndarray->shape[axis_i + 1] + ndarray->strides[axis_i + 1]) {
+    for (SizeT i = 0; i < ndarray->ndims - 1; i++) {
+        if (ndarray->strides[i] !=
+            ndarray->shape[i + 1] + ndarray->strides[i + 1]) {
             return false;
         }
     }
diff --git a/nac3core/src/codegen/irrt/ndarray/basic.rs b/nac3core/src/codegen/irrt/ndarray/basic.rs
index df3577ea..85a38571 100644
--- a/nac3core/src/codegen/irrt/ndarray/basic.rs
+++ b/nac3core/src/codegen/irrt/ndarray/basic.rs
@@ -121,7 +121,7 @@ pub fn call_nac3_ndarray_copy_data<'ctx, G: CodeGenerator + ?Sized>(
     ctx: &mut CodeGenContext<'ctx, '_>,
     src_ndarray: Ptr<'ctx, StructModel<NpArray>>,
     dst_ndarray: Ptr<'ctx, StructModel<NpArray>>,
-) -> Int<'ctx, Bool> {
+) {
     let tyctx = generator.type_context(ctx.ctx);
 
     CallFunction::begin(
@@ -131,7 +131,7 @@ pub fn call_nac3_ndarray_copy_data<'ctx, G: CodeGenerator + ?Sized>(
     )
     .arg("src_ndarray", src_ndarray)
     .arg("dst_ndarray", dst_ndarray)
-    .returning("is_c_contiguous")
+    .returning_void();
 }
 
 pub fn call_nac3_ndarray_get_nth_pelement<'ctx, G: CodeGenerator + ?Sized>(