diff --git a/src/libslic3r/Flow.cpp b/src/libslic3r/Flow.cpp
index 24a324fd5e..5863b3c389 100644
--- a/src/libslic3r/Flow.cpp
+++ b/src/libslic3r/Flow.cpp
@@ -139,7 +139,7 @@ Flow Flow::with_spacing(float new_spacing) const
         assert(m_width >= m_height);
         out.m_width += new_spacing - m_spacing;
         if (out.m_width < out.m_height)
-            throw Slic3r::InvalidArgument("Invalid spacing supplied to Flow::with_spacing()");
+            throw Slic3r::InvalidArgument(L("Invalid spacing supplied to Flow::with_spacing(), check your layer height and extrusion width"));
     }
     out.m_spacing = new_spacing;
     return out;