diff --git a/include/tesseract/publictypes.h b/include/tesseract/publictypes.h
index a81220ff80..99d0d8f660 100644
--- a/include/tesseract/publictypes.h
+++ b/include/tesseract/publictypes.h
@@ -283,10 +283,10 @@ enum OcrEngineMode {
  * Leptonica is used for thresholding 
  */
 enum ThreshMethod {
-  OTSU_TRESH,          // Legacy Tesseract's Otsu thresholding
-  ADAPTIVE_OTSU_TRESH,
-  SAUVOLA_TILED_TRESH,
-  TRESH_METHODS_COUNT, // Number of Thresholding methods
+  OTSU_THRESH,          // Legacy Tesseract's Otsu thresholding
+  ADAPTIVE_OTSU_THRESH,
+  SAUVOLA_TILED_THRESH,
+  THRESH_METHODS_COUNT, // Number of Thresholding methods
 };
 
 } // namespace tesseract.
diff --git a/src/api/baseapi.cpp b/src/api/baseapi.cpp
index 4b376ee55e..f4c1f813b2 100644
--- a/src/api/baseapi.cpp
+++ b/src/api/baseapi.cpp
@@ -2115,7 +2115,7 @@ bool TessBaseAPI::Threshold(Pix **pix) {
 
   auto thresholding_method = static_cast<ThreshMethod>(static_cast<int>(tesseract_->thresholding_method));
 
-  if (thresholding_method == OTSU_TRESH) {
+  if (thresholding_method == OTSU_THRESH) {
     if (!thresholder_->ThresholdToPix(pageseg_mode, &pix_binary)) {
       return false;
     }
diff --git a/src/ccmain/tesseractclass.cpp b/src/ccmain/tesseractclass.cpp
index 50a7789103..c41092b6a4 100644
--- a/src/ccmain/tesseractclass.cpp
+++ b/src/ccmain/tesseractclass.cpp
@@ -74,7 +74,7 @@ Tesseract::Tesseract()
                "11=sparse_text, 12=sparse_text+osd, 13=raw_line"
                " (Values from PageSegMode enum in tesseract/publictypes.h)",
                this->params())
-    , INT_MEMBER(thresholding_method, OTSU_TRESH,
+    , INT_MEMBER(thresholding_method, OTSU_THRESH,
             "Thresholding method: 0 = Otsu, 1 = Adaptive Otsu, 2 = Sauvola",
             this->params())
     , INT_INIT_MEMBER(tessedit_ocr_engine_mode, tesseract::OEM_DEFAULT,
diff --git a/src/ccmain/tesseractclass.h b/src/ccmain/tesseractclass.h
index ad9011ec2a..958c02b2c9 100644
--- a/src/ccmain/tesseractclass.h
+++ b/src/ccmain/tesseractclass.h
@@ -762,7 +762,7 @@ class TESS_API Tesseract : public Wordrec {
             "Page seg mode: 0=osd only, 1=auto+osd, 2=auto, 3=col, 4=block,"
             " 5=line, 6=word, 7=char"
             " (Values from PageSegMode enum in tesseract/publictypes.h)");
-  INT_VAR_H(thresholding_method, OTSU_TRESH,
+  INT_VAR_H(thresholding_method, OTSU_THRESH,
             "Thresholding method: 0 = Otsu, 1 = Adaptive Otsu, 2 = Sauvola");
   INT_VAR_H(tessedit_ocr_engine_mode, tesseract::OEM_DEFAULT,
             "Which OCR engine(s) to run (Tesseract, LSTM, both). Defaults"
diff --git a/src/ccmain/thresholder.cpp b/src/ccmain/thresholder.cpp
index ba17fc8f37..12f5cf8336 100644
--- a/src/ccmain/thresholder.cpp
+++ b/src/ccmain/thresholder.cpp
@@ -207,15 +207,15 @@ std::tuple<bool, Image, Image, Image> ImageThresholder::Threshold(
 
   pix_grey = GetPixRectGrey();
 
-  if (method == OTSU_TRESH || method >= TRESH_METHODS_COUNT) {
-    method = ADAPTIVE_OTSU_TRESH;
+  if (method == OTSU_THRESH || method >= THRESH_METHODS_COUNT) {
+    method = ADAPTIVE_OTSU_THRESH;
   }
 
   int r;
-  if (method == ADAPTIVE_OTSU_TRESH) {
+  if (method == ADAPTIVE_OTSU_THRESH) {
     r = pixOtsuAdaptiveThreshold(pix_grey, 300, 300, 0, 0, 0.1, 
                                  pix_thresholds.a(), pix_binary.a());
-  } else if (method == SAUVOLA_TILED_TRESH) {
+  } else if (method == SAUVOLA_TILED_THRESH) {
     r = pixSauvolaBinarizeTiled(pix_grey, 25, 0.40, 300, 300, pix_thresholds.a(), 
                                 pix_binary.a());
   }
diff --git a/src/ccstruct/image.h b/src/ccstruct/image.h
index ca7030fc00..b448fa83cb 100644
--- a/src/ccstruct/image.h
+++ b/src/ccstruct/image.h
@@ -35,7 +35,6 @@ class TESS_API Image {
   Pix *operator->() const { return pix_; }
   Pix **a() { return &pix_; }
 
-
   // api
   Image clone() const; // increases refcount
   Image copy() const;  // does full copy