diff --git a/sdk/juce/juce.mk b/sdk/juce/juce.mk
index 42e2ed5..617ab13 100644
--- a/sdk/juce/juce.mk
+++ b/sdk/juce/juce.mk
@@ -1,5 +1,5 @@
 BUILD_DIR := ./build/${CONFIG}
-JUCE_ROOT=./${JUCE_VER}
+JUCE_ROOT := ./${JUCE_VER}
 OBJS := $(addprefix ${BUILD_DIR}/, $(subst .cpp,.o,$(SRCS)))
 
 .PHONY: ${JUCE_VER}.patch