diff --git a/lib/efm32/efm32g/Makefile b/lib/efm32/efm32g/Makefile
index c3687941..1dd44850 100644
--- a/lib/efm32/efm32g/Makefile
+++ b/lib/efm32/efm32g/Makefile
@@ -30,7 +30,7 @@ CFLAGS		= -Os -g -Wall -Wextra -I../../../include -fno-common \
 		  -ffunction-sections -fdata-sections -MD -D$(FAMILY)
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
-OBJS		= vector.o systick.o scb.o nvic.o assert.o
+OBJS		=
 
 VPATH += ../:../../cm3
 
diff --git a/lib/efm32/efm32gg/Makefile b/lib/efm32/efm32gg/Makefile
index 27e2235e..24078592 100644
--- a/lib/efm32/efm32gg/Makefile
+++ b/lib/efm32/efm32gg/Makefile
@@ -30,7 +30,7 @@ CFLAGS		= -Os -g -Wall -Wextra -I../../../include -fno-common \
 		  -ffunction-sections -fdata-sections -MD -D$(FAMILY)
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
-OBJS		= vector.o systick.o scb.o nvic.o assert.o
+OBJS		=
 
 VPATH += ../:../../cm3
 
diff --git a/lib/efm32/efm32lg/Makefile b/lib/efm32/efm32lg/Makefile
index 73dd6f64..9b6343c0 100644
--- a/lib/efm32/efm32lg/Makefile
+++ b/lib/efm32/efm32lg/Makefile
@@ -30,7 +30,7 @@ CFLAGS		= -Os -g -Wall -Wextra -I../../../include -fno-common \
 		  -ffunction-sections -fdata-sections -MD -D$(FAMILY)
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
-OBJS		= vector.o systick.o scb.o nvic.o assert.o
+OBJS		=
 
 VPATH += ../:../../cm3
 
diff --git a/lib/efm32/efm32tg/Makefile b/lib/efm32/efm32tg/Makefile
index a065b6d5..605438a0 100644
--- a/lib/efm32/efm32tg/Makefile
+++ b/lib/efm32/efm32tg/Makefile
@@ -30,7 +30,7 @@ CFLAGS		= -Os -g -Wall -Wextra -I../../../include -fno-common \
 		  -ffunction-sections -fdata-sections -MD -D$(FAMILY)
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
-OBJS		= vector.o systick.o scb.o nvic.o assert.o
+OBJS		=
 
 VPATH += ../:../../cm3