diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index a1702ae5f6..3e5d654c5a 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -698,7 +698,7 @@ (define-public r-proj4
                 "07fil52jswbg2h807cd82m2wlm5j2fb891ifri9ms037099qdwf5"))))
     (properties `((upstream-name . "proj4")))
     (build-system r-build-system)
-    (inputs (list proj.4 zlib))
+    (inputs (list proj-7 zlib))
     (native-inputs (list pkg-config))
     (home-page "http://www.rforge.net/proj4/")
     (synopsis "Simple interface to the PROJ.4 cartographic projections library")