diff --git a/src/gui/sampleEdit.cpp b/src/gui/sampleEdit.cpp
index f3eb98865..df05d1ad3 100644
--- a/src/gui/sampleEdit.cpp
+++ b/src/gui/sampleEdit.cpp
@@ -1268,7 +1268,7 @@ void FurnaceGUI::drawSampleEdit() {
 
             if (sample->depth==DIV_SAMPLE_DEPTH_16BIT) {
               for (unsigned int i=start; i<end; i++) {
-                double freq=sampleFilterCutStart+(sampleFilterCutEnd-sampleFilterCutStart)*pow(double(i-start)/double(end-start),power);
+                double freq=sampleFilterCutStart+(sampleFilterSweep?((sampleFilterCutEnd-sampleFilterCutStart)*pow(double(i-start)/double(end-start),power)):0);
                 double cut=sin((freq/double(sample->centerRate))*M_PI);
 
                 for (int j=0; j<sampleFilterPower; j++) {
@@ -1284,7 +1284,7 @@ void FurnaceGUI::drawSampleEdit() {
               }
             } else if (sample->depth==DIV_SAMPLE_DEPTH_8BIT) {
               for (unsigned int i=start; i<end; i++) {
-                double freq=sampleFilterCutStart+(sampleFilterCutEnd-sampleFilterCutStart)*pow(double(i-start)/double(end-start),power);
+                double freq=sampleFilterCutStart+(sampleFilterSweep?((sampleFilterCutEnd-sampleFilterCutStart)*pow(double(i-start)/double(end-start),power)):0);
                 double cut=sin((freq/double(sample->centerRate))*M_PI);
 
                 for (int j=0; j<sampleFilterPower; j++) {