diff --git a/target/imagebuilder/Makefile b/target/imagebuilder/Makefile
index 0f45ad35e2a..4b61963b0a3 100644
--- a/target/imagebuilder/Makefile
+++ b/target/imagebuilder/Makefile
@@ -13,7 +13,7 @@ include $(INCLUDE_DIR)/feeds.mk
 
 override MAKEFLAGS=
 
-IB_NAME:=$(VERSION_DIST_SANITIZED)-ImageBuilder-$(if $(CONFIG_VERSION_FILENAMES),$(VERSION_NUMBER)-)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET)).$(HOST_OS)-$(HOST_ARCH)
+IB_NAME:=$(VERSION_DIST_SANITIZED)-imagebuilder-$(if $(CONFIG_VERSION_FILENAMES),$(VERSION_NUMBER)-)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET)).$(HOST_OS)-$(HOST_ARCH)
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(IB_NAME)
 IB_KDIR:=$(patsubst $(TOPDIR)/%,$(PKG_BUILD_DIR)/%,$(KERNEL_BUILD_DIR))
 IB_LDIR:=$(patsubst $(TOPDIR)/%,$(PKG_BUILD_DIR)/%,$(LINUX_DIR))
diff --git a/target/sdk/Makefile b/target/sdk/Makefile
index 15c381fb2db..6aed25167ba 100644
--- a/target/sdk/Makefile
+++ b/target/sdk/Makefile
@@ -13,7 +13,7 @@ include $(INCLUDE_DIR)/version.mk
 
 override MAKEFLAGS=
 
-SDK_NAME:=$(VERSION_DIST_SANITIZED)-SDK-$(if $(CONFIG_VERSION_FILENAMES),$(VERSION_NUMBER)-)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))$(if $(GCCV),_gcc-$(GCCV))$(DIR_SUFFIX).$(HOST_OS)-$(HOST_ARCH)
+SDK_NAME:=$(VERSION_DIST_SANITIZED)-sdk-$(if $(CONFIG_VERSION_FILENAMES),$(VERSION_NUMBER)-)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))$(if $(GCCV),_gcc-$(GCCV))$(DIR_SUFFIX).$(HOST_OS)-$(HOST_ARCH)
 SDK_BUILD_DIR:=$(BUILD_DIR)/$(SDK_NAME)
 
 STAGING_SUBDIR_HOST := staging_dir/host
diff --git a/target/toolchain/Makefile b/target/toolchain/Makefile
index e8fe4fb514a..2f5186c152a 100644
--- a/target/toolchain/Makefile
+++ b/target/toolchain/Makefile
@@ -14,7 +14,7 @@ include $(INCLUDE_DIR)/version.mk
 
 override MAKEFLAGS=
 
-TOOLCHAIN_NAME:=$(VERSION_DIST_SANITIZED)-Toolchain-$(if $(CONFIG_VERSION_FILENAMES),$(VERSION_NUMBER)-)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))_gcc-$(GCCV)$(DIR_SUFFIX).$(HOST_OS)-$(HOST_ARCH)
+TOOLCHAIN_NAME:=$(VERSION_DIST_SANITIZED)-toolchain-$(if $(CONFIG_VERSION_FILENAMES),$(VERSION_NUMBER)-)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))_gcc-$(GCCV)$(DIR_SUFFIX).$(HOST_OS)-$(HOST_ARCH)
 TOOLCHAIN_BUILD_DIR:=$(BUILD_DIR)/$(TOOLCHAIN_NAME)
 EXCLUDE_DIRS:=*/ccache \
 	*/initial \