diff --git a/src/live_effects/lpe-tiling.cpp b/src/live_effects/lpe-tiling.cpp
index 73c35bc47e25d2314a85b3c046e11142452961b0..ced8e3fbac8882c7c5d080c726f85562e58f3a3f 100644
--- a/src/live_effects/lpe-tiling.cpp
+++ b/src/live_effects/lpe-tiling.cpp
@@ -16,6 +16,7 @@
 #include <algorithm>
 #include <functional>
 #include <limits>
+#include <cmath>
 #include <2geom/intersection-graph.h>
 #include <2geom/path-intersection.h>
 #include <2geom/sbasis-to-bezier.h>
@@ -329,14 +330,13 @@ void LPETiling::doAfterEffect(SPLPEItem const* lpeitem, Geom::PathVector *)
                 {
                     rotatein *=-1;
                 }
-                double scalein = 1;
-                double scalegap = scaleok - scalein;
+                double scalein = 1.0;
                 if (interpolate_scalex && interpolate_scaley) {
-                    scalein = (scalegap * (i + j)) + 1;
+                    scalein = pow(scaleok, i + j);
                 } else if (interpolate_scalex) {
-                    scalein = (scalegap * j) + 1;
+                    scalein = pow(scaleok, j);
                 } else if (interpolate_scaley) {
-                    scalein = (scalegap * i) + 1;
+                    scalein = pow(scaleok, i);
                 } else {
                     scalein = scaleok;
                 }
@@ -1394,14 +1394,13 @@ LPETiling::doEffect_path_post (Geom::PathVector const & path_in, FillRuleBool fi
             {
                 rotatein *=-1;
             }
-            double scalein = 1;
-            double scalegap = scaleok - scalein;
+            double scalein = 1.0;
             if (interpolate_scalex && interpolate_scaley) {
-                scalein = (scalegap * (i + j)) + 1;
+                scalein = pow(scaleok, i + j);
             } else if (interpolate_scalex) {
-                scalein = (scalegap * j) + 1;
+                scalein = pow(scaleok, j);
             } else if (interpolate_scaley) {
-                scalein = (scalegap * i) + 1;
+                scalein = pow(scaleok, i);
             } else {
                 scalein = scaleok;
             }