diff --git a/src/ProjectionGenerator.js b/src/ProjectionGenerator.js
index 08cd7df..3f097f8 100644
--- a/src/ProjectionGenerator.js
+++ b/src/ProjectionGenerator.js
@@ -85,6 +85,7 @@ export class ProjectionGenerator {
 				if ( signal && signal.aborted ) {
 
 					reject( new Error( 'ProjectionGenerator: Process aborted via AbortSignal.' ) );
+					return;
 
 				}
 
diff --git a/src/SilhouetteGenerator.js b/src/SilhouetteGenerator.js
index afad1b7..0094514 100644
--- a/src/SilhouetteGenerator.js
+++ b/src/SilhouetteGenerator.js
@@ -94,6 +94,7 @@ export class SilhouetteGenerator {
 				if ( signal && signal.aborted ) {
 
 					reject( new Error( 'SilhouetteGenerator: Process aborted via AbortSignal.' ) );
+					return;
 
 				}