diff --git a/build.sh b/build.sh
index a3e7c29..d7ff3b2 100644
--- a/build.sh
+++ b/build.sh
@@ -4,4 +4,5 @@ go build -buildmode c-shared -ldflags="-w -s" -trimpath -v -o "go_p2fa.so"
 rm -rf ../c/libs/go_p2fa.h
 cp go_p2fa.h ../c/libs/go_p2fa.h
 cd ../c
+LD_LIBRARY_PATH=$LD_LIBRARY_PATH:./libs
 make -j1
diff --git a/c/Makefile b/c/Makefile
index 2dd1be5..644e977 100644
--- a/c/Makefile
+++ b/c/Makefile
@@ -27,6 +27,7 @@ else ifeq ($(USELIB_RPI), USE_LGPIO_LIB)
 else ifeq ($(USELIB_RPI), USE_DEV_LIB)
 	LIB_RPI += -lgpiod -lm
 endif
+LIB_RPI += -L./libs -lgo_p2fa
 DEBUG_RPI = -D $(USELIB_RPI) -D RPI
 
 USELIB_JETSONI = USE_DEV_LIB