diff --git a/desktop/font/dejavu-fonts/pspec.xml b/desktop/font/dejavu-fonts/pspec.xml
index 033a762d74..20e080e718 100644
--- a/desktop/font/dejavu-fonts/pspec.xml
+++ b/desktop/font/dejavu-fonts/pspec.xml
@@ -17,6 +17,7 @@
         <BuildDependencies>
             <Dependency>fontforge</Dependency>
             <Dependency>perl-Font-TTF</Dependency>
+            <Dependency>perl-IO-String</Dependency>
             <Dependency>unicode-ucd</Dependency>
         </BuildDependencies>
     </Source>