diff --git a/mk/crates.mk b/mk/crates.mk
index e20cb06e3a8..c3b31e60f19 100644
--- a/mk/crates.mk
+++ b/mk/crates.mk
@@ -122,7 +122,12 @@ DOC_CRATES := $(filter-out rustc, \
               $(filter-out rustc_borrowck, \
               $(filter-out rustc_resolve, \
               $(filter-out rustc_driver, \
-              $(filter-out syntax, $(CRATES))))))))
+              $(filter-out log, \
+              $(filter-out regex, \
+              $(filter-out regex_macros, \
+              $(filter-out getopts, \
+              $(filter-out time, \
+              $(filter-out syntax, $(CRATES)))))))))))))
 COMPILER_DOC_CRATES := rustc rustc_trans rustc_borrowck rustc_resolve \
                        rustc_typeck rustc_driver syntax
 
diff --git a/mk/docs.mk b/mk/docs.mk
index 9a924916ec8..2a7ef5164f0 100644
--- a/mk/docs.mk
+++ b/mk/docs.mk
@@ -236,7 +236,8 @@ LIB_DOC_DEP_$(1) = \
 	$$(RSINPUTS_$(1)) \
 	$$(RUSTDOC_EXE) \
 	$$(foreach dep,$$(RUST_DEPS_$(1)), \
-		$$(TLIB2_T_$(CFG_BUILD)_H_$(CFG_BUILD))/stamp.$$(dep) \
+		$$(TLIB2_T_$(CFG_BUILD)_H_$(CFG_BUILD))/stamp.$$(dep)) \
+	$$(foreach dep,$$(filter $$(DOC_CRATES), $$(RUST_DEPS_$(1))), \
 		doc/$$(dep)/)
 else
 LIB_DOC_DEP_$(1) = $$(CRATEFILE_$(1)) $$(RSINPUTS_$(1))