diff --git a/libs/renderengine/gl/ProgramCache.cpp b/libs/renderengine/gl/ProgramCache.cpp
index cd1182c..086a324 100644
--- a/libs/renderengine/gl/ProgramCache.cpp
+++ b/libs/renderengine/gl/ProgramCache.cpp
@@ -575,7 +575,9 @@
             float applyCornerRadius(vec2 cropCoords)
             {
                 vec2 position = cropCoords - cropCenter;
-                vec2 dist = abs(position) + vec2(cornerRadius) - cropCenter;
+                // Increase precision here so that a large corner radius doesn't
+                // cause floating point error
+                highp vec2 dist = abs(position) + vec2(cornerRadius) - cropCenter;
                 float plane = length(max(dist, vec2(0.0)));
                 return 1.0 - clamp(plane - cornerRadius, 0.0, 1.0);
             }