diff --git a/quack.sh b/quack.sh
index 2f33b643059cf8b6539296cec52ca71f57eed924..19a3096769d5a11eef154c4ae521f13efbbe805f 100755
--- a/quack.sh
+++ b/quack.sh
@@ -101,7 +101,7 @@ export FORCE_HISTOGRAM=false
 export FORCE_TILES=false
 
 # If true, the script attempts to find all alternative versions of the current image
-# in other fulders under source. Suitable for easy switching between alternate scans
+# in other folders under source. Suitable for easy switching between alternate scans
 # of the same material.
 RESOLVE_ALTERNATIVES=false