diff --git a/OpenChange/GNUmakefile b/OpenChange/GNUmakefile
index f2c14033d..4914c132c 100644
--- a/OpenChange/GNUmakefile
+++ b/OpenChange/GNUmakefile
@@ -12,7 +12,7 @@ MAPISTORESOGO = MAPIStoreSOGo
 LIBRARY_NAME = $(MAPISTORESOGO)
 
 $(MAPISTORESOGO)_VERSION = $(BACKEND_VERSION)
-$(MAPISTORESOGO)_INSTALL_DIR = $(SAMBA_LIB_DIR)/mapistore_backends
+$(MAPISTORESOGO)_INSTALL_DIR = $(DESTDIR)/$(SAMBA_LIB_DIR)/mapistore_backends
 
 $(MAPISTORESOGO)_OBJC_FILES += \
 	MAPIStoreSOGo.m