diff --git a/dev-tcltk/tdom/files/tdom-0.9.2-nothreads.patch b/dev-tcltk/tdom/files/tdom-0.9.2-nothreads.patch
new file mode 100644
index 0000000000000..b24c9821f0d4d
--- /dev/null
+++ b/dev-tcltk/tdom/files/tdom-0.9.2-nothreads.patch
@@ -0,0 +1,11 @@
+--- a/generic/tdomDecls.h	2021-12-31 20:52:18.070370435 +0100
++++ b/generic/tdomDecls.h	2021-12-31 20:53:45.892045820 +0100
+@@ -63,7 +63,7 @@
+ EXTERN domDocument *	tcldom_getDocumentFromName(Tcl_Interp *interp,
+ 				char *docName, char **errMsg);
+ /* 18 */
+-EXTERN SchemaData *	tdomGetSchemadata(void);
++EXTERN SchemaData *	tdomGetSchemadata(Tcl_Interp *interp);
+ 
+ typedef struct TdomStubs {
+     int magic;
diff --git a/dev-tcltk/tdom/tdom-0.9.2.ebuild b/dev-tcltk/tdom/tdom-0.9.2.ebuild
index c8dbe69542c7e..29ad01876f00a 100644
--- a/dev-tcltk/tdom/tdom-0.9.2.ebuild
+++ b/dev-tcltk/tdom/tdom-0.9.2.ebuild
@@ -23,7 +23,10 @@ RDEPEND="${DEPEND}"
 
 S="${WORKDIR}"/${P}-src
 
-PATCHES=( "${FILESDIR}"/${P}-useCC.patch )
+PATCHES=(
+	"${FILESDIR}"/${P}-useCC.patch
+	"${FILESDIR}"/${P}-nothreads.patch
+)
 
 src_prepare() {
 	append-libs -lm