diff --git a/modules/base/rendering/renderableprism.cpp b/modules/base/rendering/renderableprism.cpp
index 6420df222f..7c96247b21 100644
--- a/modules/base/rendering/renderableprism.cpp
+++ b/modules/base/rendering/renderableprism.cpp
@@ -256,7 +256,10 @@ void RenderablePrism::updateVertexData() {
     }
 
     // Indices for Base shape
-    ghoul_assert(_nShapeSegments.value <= std::numeric_limit<uint8_t>::max(), "Too many shape segments")
+    ghoul_assert(
+        _nShapeSegments.value() <= std::numeric_limits<uint8_t>::max(),
+        "Too many shape segments"
+    );
     for (uint8_t i = 0; i < _nShapeSegments; ++i) {
         _indexArray.push_back(i);
     }