@@ -32,11 +32,10 @@
        OFOutOfRangeException.m				\
        OFReadFailedException.m				\
        OFReadOrWriteFailedException.m			\
        OFRemoveItemFailedException.m			\
        OFRetrieveItemAttributesFailedException.m	\
-       OFSandboxActivationFailedException.m		\
        OFSeekFailedException.m				\
        OFSetItemAttributesFailedException.m		\
        OFSetOptionFailedException.m			\
        OFStillLockedException.m				\
        OFTruncatedDataException.m			\
@@ -76,10 +75,12 @@
 	       OFDeleteWindowsRegistryValueFailedException.m	\
 	       OFGetWindowsRegistryValueFailedException.m	\
 	       OFOpenWindowsRegistryKeyFailedException.m	\
 	       OFSetWindowsRegistryValueFailedException.m
 
-INCLUDES = ${SRCS:.m=.h}
+INCLUDES := ${SRCS:.m=.h}
+
+SRCS += OFSandboxActivationFailedException.m
 
 include ../../buildsys.mk
 
 CPPFLAGS += -I. -I.. -I../.. -I../runtime