diff --git a/Makefile.am b/Makefile.am
index efd0199b..9f17fe06 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -387,7 +387,6 @@ endif
 noinst_HEADERS += src/classify/classify.h
 if !DISABLED_LEGACY_ENGINE
 noinst_HEADERS += src/classify/adaptive.h
-noinst_HEADERS += src/classify/blobclass.h
 noinst_HEADERS += src/classify/cluster.h
 noinst_HEADERS += src/classify/clusttool.h
 noinst_HEADERS += src/classify/featdefs.h
diff --git a/src/api/baseapi.cpp b/src/api/baseapi.cpp
index 61b7b390..d1383693 100644
--- a/src/api/baseapi.cpp
+++ b/src/api/baseapi.cpp
@@ -23,9 +23,6 @@
 #  include "config_auto.h"
 #endif
 
-#ifndef DISABLED_LEGACY_ENGINE
-#  include "blobclass.h" // for ExtractFontName
-#endif
 #include "boxword.h"    // for BoxWord
 #include "coutln.h"     // for C_OUTLINE_IT, C_OUTLINE_LIST
 #include "dawg_cache.h" // for DawgCache
@@ -125,6 +122,34 @@ static const char *kOldVarsFile = "failed_vars.txt";
 /** Max string length of an int.  */
 const int kMaxIntSize = 22;
 
+#ifndef DISABLED_LEGACY_ENGINE
+static const char kUnknownFontName[] = "UnknownFont";
+
+static STRING_VAR(classify_font_name, kUnknownFontName,
+                  "Default font name to be used in training");
+
+// Finds the name of the training font and returns it in fontname, by cutting
+// it out based on the expectation that the filename is of the form:
+// /path/to/dir/[lang].[fontname].exp[num]
+// The [lang], [fontname] and [num] fields should not have '.' characters.
+// If the global parameter classify_font_name is set, its value is used instead.
+static void ExtractFontName(const char* filename, std::string* fontname) {
+  *fontname = classify_font_name;
+  if (*fontname == kUnknownFontName) {
+    // filename is expected to be of the form [lang].[fontname].exp[num]
+    // The [lang], [fontname] and [num] fields should not have '.' characters.
+    const char *basename = strrchr(filename, '/');
+    const char *firstdot = strchr(basename ? basename : filename, '.');
+    const char *lastdot  = strrchr(filename, '.');
+    if (firstdot != lastdot && firstdot != nullptr && lastdot != nullptr) {
+      ++firstdot;
+      *fontname = firstdot;
+      fontname->resize(lastdot - firstdot);
+    }
+  }
+}
+#endif
+
 /* Add all available languages recursively.
  */
 static void addAvailableLanguages(const std::string &datadir, const std::string &base,
diff --git a/src/classify/blobclass.cpp b/src/classify/blobclass.cpp
index bac15657..501d069a 100644
--- a/src/classify/blobclass.cpp
+++ b/src/classify/blobclass.cpp
@@ -15,8 +15,6 @@
  ** limitations under the License.
  ******************************************************************************/
 
-#include "blobclass.h"
-
 #include <cstdio>
 
 #include "classify.h"
@@ -26,35 +24,6 @@
 
 namespace tesseract {
 
-static const char kUnknownFontName[] = "UnknownFont";
-
-static STRING_VAR(classify_font_name, kUnknownFontName, "Default font name to be used in training");
-
-/**----------------------------------------------------------------------------
-            Public Code
-----------------------------------------------------------------------------**/
-
-// Finds the name of the training font and returns it in fontname, by cutting
-// it out based on the expectation that the filename is of the form:
-// /path/to/dir/[lang].[fontname].exp[num]
-// The [lang], [fontname] and [num] fields should not have '.' characters.
-// If the global parameter classify_font_name is set, its value is used instead.
-void ExtractFontName(const char *filename, std::string *fontname) {
-  *fontname = classify_font_name;
-  if (*fontname == kUnknownFontName) {
-    // filename is expected to be of the form [lang].[fontname].exp[num]
-    // The [lang], [fontname] and [num] fields should not have '.' characters.
-    const char *basename = strrchr(filename, '/');
-    const char *firstdot = strchr(basename ? basename : filename, '.');
-    const char *lastdot = strrchr(filename, '.');
-    if (firstdot != lastdot && firstdot != nullptr && lastdot != nullptr) {
-      ++firstdot;
-      *fontname = firstdot;
-      fontname->resize(lastdot - firstdot);
-    }
-  }
-}
-
 /*---------------------------------------------------------------------------*/
 
 // Extracts features from the given blob and saves them in the tr_file_data_
diff --git a/src/classify/blobclass.h b/src/classify/blobclass.h
deleted file mode 100644
index 3bc9cfd8..00000000
--- a/src/classify/blobclass.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/******************************************************************************
- ** Filename: blobclass.h
- ** Purpose: Interface to high level classification and training.
- ** Author:  Dan Johnson
- **
- ** (c) Copyright Hewlett-Packard Company, 1988.
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- ** http://www.apache.org/licenses/LICENSE-2.0
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- ******************************************************************************/
-
-#ifndef BLOBCLASS_H
-#define BLOBCLASS_H
-
-#include <string>
-
-namespace tesseract {
-// Finds the name of the training font and returns it in fontname, by cutting
-// it out based on the expectation that the filename is of the form:
-// /path/to/dir/[lang].[fontname].exp[num]
-// The [lang], [fontname] and [num] fields should not have '.' characters.
-// If the global parameter classify_font_name is set, its value is used instead.
-void ExtractFontName(const char *filename, std::string *fontname);
-
-} // namespace tesseract.
-
-#endif