diff --git a/make-includes/build_document_rules.make b/make-includes/build_document_rules.make
index 567b6d5..1e19cd1 100755
--- a/make-includes/build_document_rules.make
+++ b/make-includes/build_document_rules.make
@@ -166,7 +166,7 @@
 	$(PRINT_QUESTIONS_PDF_2UP) $(wildcard *.png)
 
 ANSWER_INSTALL_FILES:=$(WEB_ANSWERS_HTML) $(PRINT_ANSWERS_PDF_1UP) \
-	$(PRINT_ANSWERS_PDF_2UP)
+	$(PRINT_ANSWERS_PDF_2UP) $(wildcard *.png)
 
 
 ################################################################################
@@ -394,10 +394,11 @@
 # environment variable HANDBOOK_INSTALL_DIRECTORY being defined, and
 # and that it points to a valid directory.
 #
-# This checks each file in the build directory against the corresponding
-# file in the install directory. The local file is only copied to the
-# install directory if it is newer, or the remote file doesn't exist. I
-# was going to do the "newer" testing using a target rule that dealt with
+# This links each file in the build directory into the install directory.
+# There's no need to check modification dates, etc., because all of the links
+# in the install directory are deleted first anyway.
+#
+# I was going to do the testing using a target rule that dealt with
 # each file individually, but for some weird reason it would ignore any
 # additional files appended to the *_INSTALL_FILES variables. So I've done
 # it with a foreach instead, which _does_ work. (Ick, although ironically
@@ -409,12 +410,12 @@
 install-questions:
 	@$(TEST) -d $(HANDBOOK_INSTALL_ROOT)
 	@$(MKDIR_P) $(INSTALL_DIRECTORY)
-	@$(foreach f,$(QUESTION_INSTALL_FILES),if $(TEST) ! -f $(INSTALL_DIRECTORY)/$(f) -o $(CURDIR)/$(f) -nt $(INSTALL_DIRECTORY)/$(f); then $(ECHO) "Linking $(f)"; $(LN_S) $(CURDIR)/$(f) $(INSTALL_DIRECTORY); fi;)
+	@$(foreach f,$(QUESTION_INSTALL_FILES),if $(TEST) -f $(CURDIR)/$(f); then $(ECHO) "Linking $(f)"; $(LN_S) -f $(CURDIR)/$(f) $(INSTALL_DIRECTORY); fi;)
 
 install-answers:
 	@$(TEST) -d $(HANDBOOK_INSTALL_ROOT)
 	@$(MKDIR_P) $(INSTALL_DIRECTORY)
-	@$(foreach f,$(ANSWER_INSTALL_FILES),if $(TEST) ! -f $(INSTALL_DIRECTORY)/$(f) -o $(CURDIR)/$(f) -nt $(INSTALL_DIRECTORY)/$(f); then $(ECHO) "Linking $(f)"; $(LN_S) $(CURDIR)/$(f) $(INSTALL_DIRECTORY); fi;)
+	@$(foreach f,$(ANSWER_INSTALL_FILES),if $(TEST) -f $(CURDIR)/$(f); then $(ECHO) "Linking $(f)"; $(LN_S) -f $(CURDIR)/$(f) $(INSTALL_DIRECTORY); fi;)
 
 
 ################################################################################