diff --git a/var/spack/repos/builtin/packages/amdblis/package.py b/var/spack/repos/builtin/packages/amdblis/package.py
index a25f5a3c937..85264dcf35b 100644
--- a/var/spack/repos/builtin/packages/amdblis/package.py
+++ b/var/spack/repos/builtin/packages/amdblis/package.py
@@ -86,7 +86,7 @@ def configure_args(self):
         elif spec.satisfies("@3.0.1: %aocc"):
             args.append("--complex-return=intel")
 
-        if spec.satisfies("@3.1:"):
+        if spec.satisfies("@3.1"):
             args.append("--disable-aocl-dynamic")
 
         if spec.satisfies("+logging"):