diff --git a/Projects/AVRISP-MKII/makefile b/Projects/AVRISP-MKII/makefile
index d62decab94b55f842bfc9e07e02354a1daf7eaad..0675242c09d33ccd36a24672e34c5fbb9b1aa1b5 100644
--- a/Projects/AVRISP-MKII/makefile
+++ b/Projects/AVRISP-MKII/makefile
@@ -245,6 +245,7 @@ CFLAGS += -fno-inline-small-functions
 CFLAGS += -fpack-struct
 CFLAGS += -fshort-enums
 CFLAGS += -fno-strict-aliasing
+CFLAGS += -fno-split-wide-types
 CFLAGS += -Wall
 CFLAGS += -Wstrict-prototypes
 #CFLAGS += -mshort-calls
diff --git a/Projects/Webserver/makefile b/Projects/Webserver/makefile
index 16a5e148fa5af9b323d1691d6076e8f81e2c201b..175cf1f523540efd3d6fe2ad4053aa314a2549ce 100644
--- a/Projects/Webserver/makefile
+++ b/Projects/Webserver/makefile
@@ -260,6 +260,7 @@ CFLAGS += -fno-inline-small-functions
 CFLAGS += -fpack-struct
 CFLAGS += -fshort-enums
 CFLAGS += -fno-strict-aliasing
+CFLAGS += -fno-split-wide-types
 CFLAGS += -Wall
 CFLAGS += -Wstrict-prototypes
 #CFLAGS += -mshort-calls
diff --git a/Projects/XPLAINBridge/makefile b/Projects/XPLAINBridge/makefile
index 0418414b1df3bc9b161a3f2b54f878fe3887fc13..f58d7966dd4ccc3e63c005d3a3cdd204b1e046c8 100644
--- a/Projects/XPLAINBridge/makefile
+++ b/Projects/XPLAINBridge/makefile
@@ -247,6 +247,7 @@ CFLAGS += -fno-inline-small-functions
 CFLAGS += -fpack-struct
 CFLAGS += -fshort-enums
 CFLAGS += -fno-strict-aliasing
+CFLAGS += -fno-split-wide-types
 CFLAGS += -Wall
 CFLAGS += -Wstrict-prototypes
 #CFLAGS += -mshort-calls