diff --git a/releasenotes.md b/releasenotes.md
index daf5fb028..ff10e05c9 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -12,6 +12,7 @@
 - Compiler allows a generic module to be declared with different parameters #1856.
 - Fix issue with `@const` where the statement `$foo = 1;` was not considered constant.
 - Const strings and bytes were not properly converted to compile time bools.
+- Concatenating an const empty slice with another array caused a null pointer access.
 
 ### Stdlib changes
 - Added '%h' and '%H' for printing out binary data in hexadecimal using the formatter.
diff --git a/src/compiler/sema_const.c b/src/compiler/sema_const.c
index 4a455b402..fdd3c0347 100644
--- a/src/compiler/sema_const.c
+++ b/src/compiler/sema_const.c
@@ -417,6 +417,8 @@ bool sema_expr_analyse_ct_concat(SemaContext *context, Expr *concat_expr, Expr *
 				continue;
 			}
 			ConstInitializer *init = expr_const_initializer_from_expr(single_expr);
+			// Skip zero arrays from slices.
+			if (!init) continue;
 			if (init && init->kind != CONST_INIT_ARRAY_FULL)
 			{
 				ASSERT0(!init || init->type != type_untypedlist);
diff --git a/test/test_suite/compile_time/concat_zero_slice.c3t b/test/test_suite/compile_time/concat_zero_slice.c3t
new file mode 100644
index 000000000..aed583c0a
--- /dev/null
+++ b/test/test_suite/compile_time/concat_zero_slice.c3t
@@ -0,0 +1,6 @@
+fn int main()
+{
+	char[] $res;
+	$res = { '0' } +++ $res;
+    return 0;
+}
\ No newline at end of file