diff --git a/var/spack/repos/builtin/packages/graphmap/package.py b/var/spack/repos/builtin/packages/graphmap/package.py
index 8d14d807340..aad93c81256 100644
--- a/var/spack/repos/builtin/packages/graphmap/package.py
+++ b/var/spack/repos/builtin/packages/graphmap/package.py
@@ -20,6 +20,8 @@ def edit(self, spec, prefix):
         mkdirp(prefix.bin)
         makefile = FileFilter('Makefile')
         makefile.filter('/usr/bin/graphmap', prefix.bin.graphmap)
+        if self.spec.target.family == 'aarch64':
+            makefile.filter('-m64', '')
 
     def build(self, spec, prefix):
         make('modules')