diff --git a/DesktopEditor/cximage/png/pngpriv.h b/DesktopEditor/cximage/png/pngpriv.h
index 8bdccccafb..61b95b4c68 100644
--- a/DesktopEditor/cximage/png/pngpriv.h
+++ b/DesktopEditor/cximage/png/pngpriv.h
@@ -332,6 +332,7 @@
     *  DBL_MAX  Maximum floating point number (can be set to an arbitrary value)
     */
 #  include <float.h>
+#  include <math.h>
 
 #  if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
     defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
diff --git a/MsBinaryFile/XlsFile/Format/Auxiliary/HelpFunc.h b/MsBinaryFile/XlsFile/Format/Auxiliary/HelpFunc.h
index 457f0d88d5..60a3bb8df6 100644
--- a/MsBinaryFile/XlsFile/Format/Auxiliary/HelpFunc.h
+++ b/MsBinaryFile/XlsFile/Format/Auxiliary/HelpFunc.h
@@ -87,8 +87,7 @@ namespace STR
 };
 
 namespace XMLSTUFF
-{;
-
+{
 const std::wstring name2sheet_name(std::wstring name, const std::wstring prefix);
 const std::wstring xti_indexes2sheet_name(const short tabFirst, const short tabLast, std::vector<std::wstring>& names, const std::wstring prefix = L"");
 unsigned short sheetsnames2ixti(std::wstring name);
diff --git a/OfficeUtils/src/zlib-1.2.11/zutil.h b/OfficeUtils/src/zlib-1.2.11/zutil.h
index af57e47231..888a132ac3 100644
--- a/OfficeUtils/src/zlib-1.2.11/zutil.h
+++ b/OfficeUtils/src/zlib-1.2.11/zutil.h
@@ -131,6 +131,7 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
 #endif
 
 #if defined(MACOS) || defined(TARGET_OS_MAC)
+#include <stdio.h>
 #  define OS_CODE  7
 #  ifndef Z_SOLO
 #    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os