diff --git a/scripts/postinst-intercepts/update_font_cache b/scripts/postinst-intercepts/update_font_cache
index 2e6daedeb5..bf65e19a41 100644
--- a/scripts/postinst-intercepts/update_font_cache
+++ b/scripts/postinst-intercepts/update_font_cache
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 PSEUDO_UNLOAD=1 qemuwrapper -L $D -E LD_LIBRARY_PATH=$D/${libdir}:$D/${base_libdir} \
 					-E ${fontconfigcacheenv} $D${bindir}/fc-cache --sysroot=$D --system-only ${fontconfigcacheparams}
 chown -R root:root $D${fontconfigcachedir}
diff --git a/scripts/postinst-intercepts/update_pixbuf_cache b/scripts/postinst-intercepts/update_pixbuf_cache
index a8b4001069..5d44075fb4 100644
--- a/scripts/postinst-intercepts/update_pixbuf_cache
+++ b/scripts/postinst-intercepts/update_pixbuf_cache
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 export GDK_PIXBUF_MODULEDIR=$D${libdir}/gdk-pixbuf-2.0/2.10.0/loaders
 export GDK_PIXBUF_FATAL_LOADER=1