3 files changed, 3 insertions, 3 deletions
diff --git a/var/spack/repos/builtin/packages/hdf5-blosc/package.py b/var/spack/repos/builtin/packages/hdf5-blosc/package.py
index 053a4d4852..288f958134 100644
--- a/var/spack/repos/builtin/packages/hdf5-blosc/package.py
+++ b/var/spack/repos/builtin/packages/hdf5-blosc/package.py
@@ -184,7 +184,7 @@ Done.
                "-L%s" % spec["hdf5"].prefix.lib, "-lhdf5")
             try:
                 check = Executable("./check")
-                output = check(return_output=True)
+                output = check(output=str)
             except:
                 output = ""
             success = output == expected
diff --git a/var/spack/repos/builtin/packages/hdf5/package.py b/var/spack/repos/builtin/packages/hdf5/package.py
index 50ad30222f..2f2f016177 100644
--- a/var/spack/repos/builtin/packages/hdf5/package.py
+++ b/var/spack/repos/builtin/packages/hdf5/package.py
@@ -263,7 +263,7 @@ HDF5 version {version} {version}
                  spec['hdf5'].libs.ld_flags.split()))
             try:
                 check = Executable('./check')
-                output = check(return_output=True)
+                output = check(output=str)
             except:
                 output = ""
             success = output == expected
diff --git a/var/spack/repos/builtin/packages/spark/package.py b/var/spack/repos/builtin/packages/spark/package.py
index 3030fb1310..52eb5d7289 100644
--- a/var/spack/repos/builtin/packages/spark/package.py
+++ b/var/spack/repos/builtin/packages/spark/package.py
@@ -72,7 +72,7 @@ class Spark(Package):
         # spack_env.set('JAVA_HOME', self.spec['jdk'].prefix)
 
         hadoop = self.spec['hadoop'].command
-        hadoop_classpath = hadoop('classpath', return_output=True)
+        hadoop_classpath = hadoop('classpath', output=str)
 
         # Remove whitespaces, as they can compromise syntax in
         # module files