diff --git a/makepanda/installpanda.py b/makepanda/installpanda.py
index 5b9f7b1a73..9f32f4f03b 100644
--- a/makepanda/installpanda.py
+++ b/makepanda/installpanda.py
@@ -106,21 +106,21 @@ def InstallPanda(destdir="", prefix="/usr", outputdir="built"):
         PEXEC = os.path.join(os.path.dirname(sys.executable), os.readlink(sys.executable))
     else:
         PEXEC = sys.executable
-    oscmd("mkdir -p "+destdir+prefix+"/bin")
-    oscmd("mkdir -p "+destdir+prefix+"/include")
-    oscmd("mkdir -p "+destdir+prefix+"/share/panda3d")
-    oscmd("mkdir -p "+destdir+prefix+"/share/panda3d/direct")
-    oscmd("mkdir -p "+destdir+prefix+"/share/mime-info")
-    oscmd("mkdir -p "+destdir+prefix+"/share/mime/packages")
-    oscmd("mkdir -p "+destdir+prefix+"/share/application-registry")
-    oscmd("mkdir -p "+destdir+prefix+"/share/applications")
-    oscmd("mkdir -p "+destdir+prefix+libdir+"/panda3d")
-    oscmd("mkdir -p "+destdir+PPATH)
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/bin")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/include")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/panda3d")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/panda3d/direct")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/mime-info")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/mime/packages")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/application-registry")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/applications")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+libdir+"/panda3d")
+    oscmd("mkdir -m 0755 -p "+destdir+PPATH)
     if (sys.platform.startswith("freebsd")):
-        oscmd("mkdir -p "+destdir+prefix+"/etc")
-        oscmd("mkdir -p "+destdir+"/usr/local/libdata/ldconfig")
+        oscmd("mkdir -m 0755 -p "+destdir+prefix+"/etc")
+        oscmd("mkdir -m 0755 -p "+destdir+"/usr/local/libdata/ldconfig")
     else:
-        oscmd("mkdir -p "+destdir+"/etc/ld.so.conf.d")
+        oscmd("mkdir -m 0755 -p "+destdir+"/etc/ld.so.conf.d")
     WriteFile(destdir+prefix+"/share/panda3d/direct/__init__.py", "")
     Configrc = ReadFile(outputdir+"/etc/Config.prc")
     Configrc = Configrc.replace("model-path    $THIS_PRC_DIR/..", "model-path    "+prefix+"/share/panda3d")
@@ -173,23 +173,23 @@ def InstallPanda(destdir="", prefix="/usr", outputdir="built"):
 
 def InstallRuntime(destdir="", prefix="/usr", outputdir="built"):
     if (not prefix.startswith("/")): prefix = "/" + prefix
-    oscmd("mkdir -p "+destdir+prefix+"/bin")
-    oscmd("mkdir -p "+destdir+prefix+"/share/mime-info")
-    oscmd("mkdir -p "+destdir+prefix+"/share/mime/packages")
-    oscmd("mkdir -p "+destdir+prefix+"/share/application-registry")
-    oscmd("mkdir -p "+destdir+prefix+"/share/applications")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/bin")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/mime-info")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/mime/packages")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/application-registry")
+    oscmd("mkdir -m 0755 -p "+destdir+prefix+"/share/applications")
     if (os.path.exists(outputdir+"/plugins/nppanda3d.so")):
-        oscmd("mkdir -p "+destdir+prefix+libdir)
+        oscmd("mkdir -m 0755 -p "+destdir+prefix+libdir)
         oscmd("cp "+outputdir+"/plugins/nppanda3d.so "+destdir+prefix+libdir+"/nppanda3d.so")
         if sys.platform.startswith("freebsd"):
-            oscmd("mkdir -p "+destdir+prefix+libdir+"/browser_plugins/symlinks/gecko19")
-            oscmd("mkdir -p "+destdir+prefix+libdir+"/libxul/plugins")
+            oscmd("mkdir -m 0755 -p "+destdir+prefix+libdir+"/browser_plugins/symlinks/gecko19")
+            oscmd("mkdir -m 0755 -p "+destdir+prefix+libdir+"/libxul/plugins")
             oscmd("ln -s "+prefix+libdir+"/nppanda3d.so  "+destdir+prefix+libdir+"/browser_plugins/symlinks/gecko19/nppanda3d.so")
             oscmd("ln -s "+prefix+libdir+"/nppanda3d.so  "+destdir+prefix+libdir+"/libxul/plugins/nppanda3d.so")
         else:
-            oscmd("mkdir -p "+destdir+prefix+libdir+"/mozilla/plugins")
-            oscmd("mkdir -p "+destdir+prefix+libdir+"/mozilla-firefox/plugins")
-            oscmd("mkdir -p "+destdir+prefix+libdir+"/xulrunner-addons/plugins")
+            oscmd("mkdir -m 0755 -p "+destdir+prefix+libdir+"/mozilla/plugins")
+            oscmd("mkdir -m 0755 -p "+destdir+prefix+libdir+"/mozilla-firefox/plugins")
+            oscmd("mkdir -m 0755 -p "+destdir+prefix+libdir+"/xulrunner-addons/plugins")
             oscmd("ln -s "+prefix+libdir+"/nppanda3d.so  "+destdir+prefix+libdir+"/mozilla/plugins/nppanda3d.so")
             oscmd("ln -s "+prefix+libdir+"/nppanda3d.so  "+destdir+prefix+libdir+"/mozilla-firefox/plugins/nppanda3d.so")
             oscmd("ln -s "+prefix+libdir+"/nppanda3d.so  "+destdir+prefix+libdir+"/xulrunner-addons/plugins/nppanda3d.so")
diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index 42f8249f1f..39f8ace32a 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -5236,7 +5236,7 @@ def MakeInstallerLinux():
     PV = PYTHONV.replace("python", "")
     if (os.path.isdir("targetroot")): oscmd("chmod -R 755 targetroot")
     oscmd("rm -rf targetroot data.tar.gz control.tar.gz panda3d.spec")
-    oscmd("mkdir targetroot")
+    oscmd("mkdir --mode=0755 targetroot")
 
     # Invoke installpanda.py to install it into a temporary dir
     if RUNTIME: