diff --git a/src/Magnum/Math/Test/VectorTest.cpp b/src/Magnum/Math/Test/VectorTest.cpp
index 5ce3e22a1..903a35245 100644
--- a/src/Magnum/Math/Test/VectorTest.cpp
+++ b/src/Magnum/Math/Test/VectorTest.cpp
@@ -214,7 +214,11 @@ void VectorTest::constructOneComponent() {
 
     /* Implicit constructor must work */
     constexpr Vector1 vec = 1.0f;
-    CORRADE_COMPARE(vec, Vector1(1));
+    CORRADE_COMPARE(vec, Vector1{1.0f});
+
+    /* Conversion back must also work */
+    Float value = vec;
+    CORRADE_COMPARE(value, 1.0f);
 }
 
 void VectorTest::constructConversion() {