diff --git a/src/spessasynth_lib/synthetizer/worklet_system/channel_processor.js b/src/spessasynth_lib/synthetizer/worklet_system/channel_processor.js
index b75afe42..b57024fc 100644
--- a/src/spessasynth_lib/synthetizer/worklet_system/channel_processor.js
+++ b/src/spessasynth_lib/synthetizer/worklet_system/channel_processor.js
@@ -149,7 +149,7 @@ class ChannelProcessor extends AudioWorkletProcessor {
                     {
                         return;
                     }
-                    v.sample.end = data.sampleData.length + v.generators[generatorTypes.endAddrOffset] + (v.generators[generatorTypes.endAddrsCoarseOffset] * 32768);
+                    v.sample.end = data.sampleData.length - 1 + v.generators[generatorTypes.endAddrOffset] + (v.generators[generatorTypes.endAddrsCoarseOffset] * 32768);
                 })
 
                 break;
diff --git a/src/spessasynth_lib/synthetizer/worklet_system/worklet_channel.js b/src/spessasynth_lib/synthetizer/worklet_system/worklet_channel.js
index 47c03ed7..8d6e1a0e 100644
--- a/src/spessasynth_lib/synthetizer/worklet_system/worklet_channel.js
+++ b/src/spessasynth_lib/synthetizer/worklet_system/worklet_channel.js
@@ -357,7 +357,7 @@ export class WorkletChannel {
                     rootKey: rootKey,
                     loopStart: loopStart,
                     loopEnd: loopEnd,
-                    end: Math.floor( sampleAndGenerators.sample.sampleData.length) + (generators[generatorTypes.endAddrOffset] + (generators[generatorTypes.endAddrsCoarseOffset] * 32768)),
+                    end: Math.floor( sampleAndGenerators.sample.sampleData.length) - 1 + (generators[generatorTypes.endAddrOffset] + (generators[generatorTypes.endAddrsCoarseOffset] * 32768)),
                     loopingMode: loopingMode
                 };