diff --git a/tests/XRootD/smoke.sh b/tests/XRootD/smoke.sh
index 58e0f93f0f7..76ae67fd9ab 100755
--- a/tests/XRootD/smoke.sh
+++ b/tests/XRootD/smoke.sh
@@ -39,7 +39,7 @@ ${XRDFS} ${HOST} statvfs /
 ${XRDFS} ${HOST} spaceinfo /
 
 # create local temporary directory
-TMPDIR=$(mktemp -d /tmp/xrdfs-test-XXXXXX)
+TMPDIR=$(mktemp -d ${PWD}/xrdfs-test-XXXXXX)
 
 # cleanup after ourselves if something fails
 trap "rm -rf ${TMPDIR}" EXIT
diff --git a/tests/XrdEc/MicroTest.cc b/tests/XrdEc/MicroTest.cc
index 61727e8c0fc..61e26916327 100644
--- a/tests/XrdEc/MicroTest.cc
+++ b/tests/XrdEc/MicroTest.cc
@@ -32,6 +32,8 @@
 
 #include "XrdCl/XrdClMessageUtils.hh"
 
+#include "XrdSys/XrdSysPlatform.hh"
+
 #include "XrdZip/XrdZipCDFH.hh"
 
 #include <string>
@@ -323,7 +325,9 @@ void XrdEcTests::Init( bool usecrc32c )
   objcfg.reset( new ObjCfg( "test.txt", nbdata, nbparity, chsize, usecrc32c, true ) );
   rawdata.clear();
 
-  char tmpdir[32] = "/tmp/xrootd-xrdec-XXXXXX";
+  char tmpdir[MAXPATHLEN];
+  EXPECT_TRUE( getcwd(tmpdir, MAXPATHLEN - 21) );
+  strcat(tmpdir, "/xrootd-xrdec-XXXXXX");
   // create the data directory
   EXPECT_TRUE( mkdtemp(tmpdir) );
   datadir = tmpdir;
diff --git a/tests/XrdEcTests/MicroTest.cc b/tests/XrdEcTests/MicroTest.cc
index d02743351b9..5b375c6fe4f 100644
--- a/tests/XrdEcTests/MicroTest.cc
+++ b/tests/XrdEcTests/MicroTest.cc
@@ -34,6 +34,8 @@
 
 #include "XrdZip/XrdZipCDFH.hh"
 
+#include "XrdSys/XrdSysPlatform.hh"
+
 #include <string>
 #include <memory>
 #include <limits>
@@ -280,7 +282,9 @@ void MicroTest::Init( bool usecrc32c )
   objcfg.reset( new ObjCfg( "test.txt", nbdata, nbparity, chsize, usecrc32c, true ) );
   rawdata.clear();
 
-  char tmpdir[32] = "/tmp/xrootd-xrdec-XXXXXX";
+  char tmpdir[MAXPATHLEN];
+  CPPUNIT_ASSERT( getcwd(tmpdir, MAXPATHLEN - 21) );
+  strcat(tmpdir, "/xrootd-xrdec-XXXXXX");
   // create the data directory
   CPPUNIT_ASSERT( mkdtemp(tmpdir) );
   datadir = tmpdir;