--- /dev/null
+diff --git a/lily/general-scheme.cc b/lily/general-scheme.cc
+index d25e6c9ef8..2fd2e4a4fa 100644
+--- a/lily/general-scheme.cc
++++ b/lily/general-scheme.cc
+@@ -275,7 +275,7 @@ LY_DEFINE (ly_protects, "ly:protects",
+ #if SCM_MAJOR_VERSION < 2 || SCM_MAJOR_VERSION == 2 && SCM_MINOR_VERSION < 1
+ return scm_protects;
+ #else
+- return programming_error ("ly:protects is not supported in Guile 2.1");
++ programming_error ("ly:protects is not supported in Guile 2.1");
+ #endif
+ }
+
LANGS=" ca cs da de el eo es fi fr it ja nl ru sv tr uk vi zh_TW"
IUSE="debug emacs guile2 profile vim-syntax"
REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+PATCHES=(${FILESDIR}/$P-programming_error.patch)
RDEPEND=">=app-text/ghostscript-gpl-8.15
>=dev-scheme/guile-1.8.2:12[deprecated,regex]