diff --git a/src/api/baseapi.cpp b/src/api/baseapi.cpp
index e98331b7..fe0040a8 100644
--- a/src/api/baseapi.cpp
+++ b/src/api/baseapi.cpp
@@ -29,9 +29,7 @@
 #include "dict.h"       // for Dict
 #include "elst.h"       // for ELIST_ITERATOR, ELISTIZE, ELISTIZEH
 #include "environ.h"    // for l_uint8
-#ifndef DISABLED_LEGACY_ENGINE
-#  include "equationdetect.h" // for EquationDetect
-#endif
+#include "equationdetect.h" // for EquationDetect, destructor of equ_detect_
 #include "errcode.h" // for ASSERT_HOST
 #include "helpers.h" // for IntCastRounded, chomp_string
 #include "host.h"    // for MAX_PATH
diff --git a/src/tesseract.cpp b/src/tesseract.cpp
index fbbddb87..0f702414 100644
--- a/src/tesseract.cpp
+++ b/src/tesseract.cpp
@@ -25,6 +25,7 @@
 #if defined(__USE_GNU)
 #  include <cfenv> // for feenableexcept
 #endif
+#include <climits> // for INT_MIN, INT_MAX
 #include <cstdlib> // for std::getenv
 #include <iostream>
 #include <map>    // for std::map