diff --git a/fsthttp/imageopto/imageopto.go b/fsthttp/imageopto/imageopto.go
index bc825d7..b2ad73c 100644
--- a/fsthttp/imageopto/imageopto.go
+++ b/fsthttp/imageopto/imageopto.go
@@ -881,7 +881,7 @@ func (o *Options) QueryString() (string, error) {
 	}
 
 	if o.Contrast != 0 {
-		args = append(args, "constrast="+strconv.Itoa(o.Contrast))
+		args = append(args, "contrast="+strconv.Itoa(o.Contrast))
 	}
 
 	if o.Crop != nil {
diff --git a/fsthttp/imageopto/imageopto_test.go b/fsthttp/imageopto/imageopto_test.go
index 9ef37d2..fbb4f08 100644
--- a/fsthttp/imageopto/imageopto_test.go
+++ b/fsthttp/imageopto/imageopto_test.go
@@ -16,7 +16,7 @@ func TestOpts(t *testing.T) {
 		{&Options{Region: RegionUsEast, Blur: NewBlurModePercentage(0.8)}, "region=us_east&blur=0.8p"},
 		{&Options{Region: RegionUsEast, Brightness: -50}, "region=us_east&brightness=-50"},
 		{&Options{Region: RegionUsEast, Bw: NewBWModeThreshold(10)}, "region=us_east&bw=threshold,10"},
-		{&Options{Region: RegionUsEast, Contrast: -5}, "region=us_east&constrast=-5"},
+		{&Options{Region: RegionUsEast, Contrast: -5}, "region=us_east&contrast=-5"},
 		{&Options{Region: RegionUsEast, Dpr: 3.2}, "region=us_east&dpr=3.2"},
 		{&Options{Region: RegionUsEast, Enable: EnableOptUpscale}, "region=us_east&enable=upscale"},
 		{&Options{Region: RegionUsEast, Format: FormatJPEGXL}, "region=us_east&format=jpegxl"},