diff --git a/app-crypt/autofirma/autofirma-1.8.2.ebuild b/app-crypt/autofirma/autofirma-1.8.2.ebuild
index 3e1ae0b64c..1b99ee6401 100644
--- a/app-crypt/autofirma/autofirma-1.8.2.ebuild
+++ b/app-crypt/autofirma/autofirma-1.8.2.ebuild
@@ -14,7 +14,7 @@ HOMEPAGE="
 SRC_URI="https://estaticos.redsara.es/comunes/autofirma/$(ver_rs 1- /)/AutoFirma_Linux_Fedora.zip -> ${P}.zip
 	https://distfiles.chuso.net/distfiles/${P}.zip"
 
-S=${WORKDIR}
+S="${WORKDIR}"
 
 LICENSE="|| ( GPL-2 EUPL-1.1 )"
 SLOT="0"
diff --git a/app-crypt/autofirma/autofirma-1.8.3.ebuild b/app-crypt/autofirma/autofirma-1.8.3.ebuild
index 0c89a6b9c6..a80ade5337 100644
--- a/app-crypt/autofirma/autofirma-1.8.3.ebuild
+++ b/app-crypt/autofirma/autofirma-1.8.3.ebuild
@@ -15,7 +15,7 @@ HOMEPAGE="
 # If Gentoo's default configuration is in place, pkg_pretend() and pkg_nofetch() provide fallback options.
 SRC_URI="https://estaticos.redsara.es/comunes/autofirma/$(ver_rs 1- /)/AutoFirma_Linux_Fedora.zip -> ${PF}.zip"
 
-S=${WORKDIR}
+S="${WORKDIR}"
 
 LICENSE="|| ( GPL-2 EUPL-1.1 )"
 SLOT="0"