diff --git a/sofort/core/defs.mk b/sofort/core/defs.mk
index 151bc3d..ff656c8 100644
--- a/sofort/core/defs.mk
+++ b/sofort/core/defs.mk
@@ -1,18 +1,18 @@
-SHARED_LIB_DEPS =
-SHARED_APP_DEPS =
-STATIC_APP_DEPS =
+SHARED_LIB_DEPS    +=
+SHARED_APP_DEPS    +=
+STATIC_APP_DEPS    +=
 
-COMMON_LOBJS	= $(COMMON_SRCS:.c=.lo)
-COMMON_OBJS	= $(COMMON_SRCS:.c=.o)
+COMMON_LOBJS	   += $(COMMON_SRCS:.c=.lo)
+COMMON_OBJS	   += $(COMMON_SRCS:.c=.o)
 
-ARCH_LOBJS	= $(ARCH_SRCS:.c=.lo)
-ARCH_OBJS	= $(ARCH_SRCS:.c=.o)
+ARCH_LOBJS	   += $(ARCH_SRCS:.c=.lo)
+ARCH_OBJS	   += $(ARCH_SRCS:.c=.o)
 
-APP_LOBJS	= $(APP_SRCS:.c=.lo)
-APP_OBJS	= $(APP_SRCS:.c=.o)
+APP_LOBJS	   += $(APP_SRCS:.c=.lo)
+APP_OBJS	   += $(APP_SRCS:.c=.o)
 
-SHARED_OBJS	= $(COMMON_LOBJS) $(ARCH_LOBJS)
-STATIC_OBJS	= $(COMMON_OBJS)  $(ARCH_OBJS)
+SHARED_OBJS	   += $(COMMON_LOBJS) $(ARCH_LOBJS)
+STATIC_OBJS	   += $(COMMON_OBJS)  $(ARCH_OBJS)
 
 STATIC_LIB_NAME	= $(OS_LIB_PREFIX)$(PACKAGE)$(OS_ARCHIVE_EXT)
 STATIC_LIB	= lib/$(STATIC_LIB_NAME)