diff --git a/meta/recipes-support/libexif/libexif_0.6.24.bb b/meta/recipes-support/libexif/libexif_0.6.24.bb
index 27e369a89a..b407ee52de 100644
--- a/meta/recipes-support/libexif/libexif_0.6.24.bb
+++ b/meta/recipes-support/libexif/libexif_0.6.24.bb
@@ -7,9 +7,6 @@ SECTION = "libs"
 LICENSE = "LGPL-2.1-only"
 LIC_FILES_CHKSUM = "file://COPYING;md5=243b725d71bb5df4a1e5920b344b86ad"
 
-def version_underscore(v):
-    return "_".join(v.split("."))
-
 SRC_URI = "${GITHUB_BASE_URI}/download/v${PV}/libexif-${PV}.tar.bz2 \
            file://0001-Add-serial-tests-config-needed-by-ptest.patch \
            file://run-ptest \