diff --git a/TockLibrary.mk b/TockLibrary.mk
index 7c04e3191..79af90804 100644
--- a/TockLibrary.mk
+++ b/TockLibrary.mk
@@ -29,10 +29,6 @@ $(call check_defined, LIBNAME)
 $(call check_defined, $(LIBNAME)_DIR)
 $(call check_defined, $(LIBNAME)_SRCS)
 
-ifeq ($(strip $($(LIBNAME)_SRCS)),)
-  $(error Library "$(LIBNAME)" has no SRCS?)
-endif
-
 # directory for built output
 $(LIBNAME)_BUILDDIR := $($(LIBNAME)_DIR)/build