diff --git a/lib/std/math.matrix.c3 b/lib/std/math.matrix.c3
index a1590cf91..cd3dacb25 100644
--- a/lib/std/math.matrix.c3
+++ b/lib/std/math.matrix.c3
@@ -1,4 +1,4 @@
-module math;
+module std::math;
 
 fault MatrixError {
     MATRIX_INVERSE_DOESNT_EXIST,