diff --git a/var/spack/repos/builtin/packages/imagemagick/package.py b/var/spack/repos/builtin/packages/imagemagick/package.py
index bf133809280..63543ca552f 100644
--- a/var/spack/repos/builtin/packages/imagemagick/package.py
+++ b/var/spack/repos/builtin/packages/imagemagick/package.py
@@ -27,6 +27,7 @@ class Imagemagick(AutotoolsPackage):
     depends_on('libtiff')
     depends_on('ghostscript')
     depends_on('ghostscript-fonts')
+    depends_on('libsm')
 
     def configure_args(self):
         spec = self.spec