diff --git a/debian/rules b/debian/rules
index 6e7d935131..cb4835e47e 100755
--- a/debian/rules
+++ b/debian/rules
@@ -13,3 +13,21 @@
 
 %:
 	dh $@
+
+override_dh_auto_build:
+	chmod -x app/assets/fonts/SourceSansPro-BlackItalic.ttf
+	chmod -x app/assets/fonts/SourceSansPro-Italic.ttf
+	chmod -x app/assets/fonts/SourceSansPro-LightItalic.ttf
+	chmod -x app/assets/fonts/OFL.txt
+	chmod -x app/assets/fonts/SourceSansPro-SemiboldItalic.ttf
+	chmod -x app/assets/fonts/SourceSansPro-BoldItalic.ttf
+	chmod -x app/assets/fonts/SourceSansPro-ExtraLightItalic.ttf
+
+override_dh_auto_clean:
+	chmod +x app/assets/fonts/SourceSansPro-BlackItalic.ttf
+	chmod +x app/assets/fonts/SourceSansPro-Italic.ttf
+	chmod +x app/assets/fonts/SourceSansPro-LightItalic.ttf
+	chmod +x app/assets/fonts/OFL.txt
+	chmod +x app/assets/fonts/SourceSansPro-SemiboldItalic.ttf
+	chmod +x app/assets/fonts/SourceSansPro-BoldItalic.ttf
+	chmod +x app/assets/fonts/SourceSansPro-ExtraLightItalic.ttf