diff --git a/src/implementations.jl b/src/implementations.jl
index 87d65adf9..ad11c6d1e 100644
--- a/src/implementations.jl
+++ b/src/implementations.jl
@@ -82,41 +82,41 @@ const MPI_VERSION = Get_version()
 
 using PkgVersion
 """
-    MPI.versioninfo()
+    MPI.versioninfo(io::IO=stdout)
 
 Print a summary of the curent MPI configuration.
 """
-function versioninfo()
-    println("MPIPreferences:")
-    println("  binary:  ", MPIPreferences.binary)
-    println("  abi:     ", MPIPreferences.abi)
+function versioninfo(io::IO=stdout)
+    println(io, "MPIPreferences:")
+    println(io, "  binary:  ", MPIPreferences.binary)
+    println(io, "  abi:     ", MPIPreferences.abi)
     if MPIPreferences.binary == "system"
-        println("  libmpi:  ", MPIPreferences.System.libmpi)
-        println("  mpiexec: ", MPIPreferences.System.mpiexec_path)
+        println(io, "  libmpi:  ", MPIPreferences.System.libmpi)
+        println(io, "  mpiexec: ", MPIPreferences.System.mpiexec_path)
     end
-    println()
-    println("Package versions")
-    println("  MPI.jl:             ", PkgVersion.@Version)
-    println("  MPIPreferences.jl:  ", PkgVersion.Version(MPIPreferences))
+    println(io)
+    println(io, "Package versions")
+    println(io, "  MPI.jl:             ", PkgVersion.@Version)
+    println(io, "  MPIPreferences.jl:  ", PkgVersion.Version(MPIPreferences))
     if MPIPreferences.binary == "MPICH_jll"
-        println("  MPICH_jll:          ", PkgVersion.Version(API.MPICH_jll))
+        println(io, "  MPICH_jll:          ", PkgVersion.Version(API.MPICH_jll))
     elseif MPIPreferences.binary == "OpenMPI_jll"
-        println("  OpenMPI_jll:        ", PkgVersion.Version(API.OpenMPI_jll))
+        println(io, "  OpenMPI_jll:        ", PkgVersion.Version(API.OpenMPI_jll))
     elseif MPIPreferences.binary == "OpenMPI_jll"
-        println("  OpenMPI_jll:        ", PkgVersion.Version(API.OpenMPI_jll))
+        println(io, "  OpenMPI_jll:        ", PkgVersion.Version(API.OpenMPI_jll))
     elseif MPIPreferences.binary == "MicrosoftMPI_jll"
-        println("  MicrosoftMPI_jll:   ", PkgVersion.Version(API.MicrosoftMPI_jll))
+        println(io, "  MicrosoftMPI_jll:   ", PkgVersion.Version(API.MicrosoftMPI_jll))
     elseif MPIPreferences.binary == "MPItrampoline_jll"
-        println("  MPItrampoline_jll   ", PkgVersion.Version(API.MPItrampoline_jll))
+        println(io, "  MPItrampoline_jll   ", PkgVersion.Version(API.MPItrampoline_jll))
     end
-        
-    println()
-    println("Library information:")
-    println("  libmpi:  ", API.libmpi)
-    println("  libmpi dlpath:  ", Libdl.dlpath(API.libmpi))
-    println("  MPI version:  ", Get_version())
-    println("  Library version:  ")
+
+    println(io)
+    println(io, "Library information:")
+    println(io, "  libmpi:  ", API.libmpi)
+    println(io, "  libmpi dlpath:  ", Libdl.dlpath(API.libmpi))
+    println(io, "  MPI version:  ", Get_version())
+    println(io, "  Library version:  ")
     for line in split(Get_library_version(), '\n')
-        println("    ", line)
+        println(io, "    ", line)
     end
 end