diff --git a/scintilla/Makefile.am b/scintilla/Makefile.am
index 61f88eb89..186ed8ae1 100644
--- a/scintilla/Makefile.am
+++ b/scintilla/Makefile.am
@@ -3,7 +3,7 @@ SUBDIRS = include
 
 noinst_LTLIBRARIES=libscintilla.la
 
-AM_CXXFLAGS = -DNDEBUG -DGTK -DSCI_LEXER
+AM_CXXFLAGS = -DNDEBUG -DGTK -DSCI_LEXER -DNO_CXX11_REGEX
 
 LEXER_SRCS= \
 lexers/LexAbaqus.cxx \
diff --git a/scintilla/gtk/makefile.win32 b/scintilla/gtk/makefile.win32
index 362e59ae4..4e8596051 100644
--- a/scintilla/gtk/makefile.win32
+++ b/scintilla/gtk/makefile.win32
@@ -32,7 +32,9 @@ vpath %.h ../src ../include ../lexlib
 vpath %.cxx ../src ../lexlib ../lexers
 
 INCLUDEDIRS=-I ../include -I ../src -I ../lexlib
-CXXBASEFLAGS=-Wall -Wno-missing-braces -Wno-char-subscripts -DGTK -DSCI_LEXER $(INCLUDEDIRS) \
+CXXBASEFLAGS=-Wall -Wno-missing-braces -Wno-char-subscripts \
+	-DGTK -DSCI_LEXER -DNO_CXX11_REGEX \
+	$(INCLUDEDIRS) \
 	-DGEANY_EXPORT_SYMBOL="__declspec(dllexport)" \
 	-DGEANY_API_SYMBOL=GEANY_EXPORT_SYMBOL