diff --git a/make/defs.mk b/make/defs.mk
index 13829002..76cc946d 100644
--- a/make/defs.mk
+++ b/make/defs.mk
@@ -1474,7 +1474,7 @@ PREREQ                    += NTV2
 endif
 
 ifneq ($(filter btools,$(PREREQ_BUILD)),)
-BTOOLS_DIR                 = $(firstword $(wildcard $(CVS_PROJ_DIR)/btools /opt/$(FLAVOUR_PATH_PREFIX)btools))
+BTOOLS_DIR                 = $(firstword $(wildcard $(CVS_PROJ_DIR)/btools /opt/$(FLAVOUR_PATH_PREFIX)dspider-btools))
 BTOOLS_VERSION             = $(call version,$(BTOOLS_DIR))
 RPM_REQUIRES_RUN          += $(FLAVOUR_PREFIX)dspider-btools-run = $(BTOOLS_VERSION)
 RPM_REQUIRES_DEVEL        += $(FLAVOUR_PREFIX)dspider-btools-devel = $(BTOOLS_VERSION)