diff --git a/pubs/pc/reference/ibm/5150/techref/manifest.xml b/pubs/pc/reference/ibm/5150/techref/manifest.xml
index cf318bce4..43ec6405a 100644
--- a/pubs/pc/reference/ibm/5150/techref/manifest.xml
+++ b/pubs/pc/reference/ibm/5150/techref/manifest.xml
@@ -5,7 +5,7 @@
 	<source href="http://minuszerodegrees.net">minuszerodegrees.net</source>
 	<document href="http://minuszerodegrees.net/manuals/IBM_5150_Technical_Reference_6025005_AUG81.pdf">
 		<name>IBM 5150 Technical Reference (August 1981)</name>
-		<cover href="../../static/5150/techref/thumbs/IBM-5150-TECHREF 1.jpeg"/>
+		<cover href="../../static/5150/techref/1981-08/thumbs/IBM-5150-TECHREF 1.jpeg"/>
 		<page href="#page=109">Floppy Disk Adapter</page>
 	</document>
-</manifest>
\ No newline at end of file
+</manifest>
diff --git a/pubs/pc/reference/ibm/5170/techref/manifest.xml b/pubs/pc/reference/ibm/5170/techref/manifest.xml
index 84cc96cd7..9563d83e8 100644
--- a/pubs/pc/reference/ibm/5170/techref/manifest.xml
+++ b/pubs/pc/reference/ibm/5170/techref/manifest.xml
@@ -5,7 +5,7 @@
 	<source href="http://minuszerodegrees.net">minuszerodegrees.net</source>
 	<document href="http://minuszerodegrees.net/manuals/IBM_5170_Technical_Reference_1502243_MAR84.pdf">
 		<name>IBM 5170 Technical Reference (March 1984)</name>
-		<cover href="../../static/5170/techref/thumbs/IBM-5170-TECHREF 1.jpeg"/>
+		<cover href="../../static/5170/techref/1984-03/thumbs/IBM-5170-TECHREF 1.jpeg"/>
 		<page href="#page=48">I/O Address Map</page>
 		<page href="#page=67">CMOS Addresses</page>
 		<page href="#page=165">BIOS Map</page>
@@ -13,4 +13,4 @@
 		<page href="#page=175">TEST.01: X286 Processor Test</page>
 		<page href="#page=177">TEST.02: Verify CMOS Shutdown Byte</page>
 	</document>
-</manifest>
\ No newline at end of file
+</manifest>