diff --git a/makepanda/installpanda.py b/makepanda/installpanda.py
index c8a2cdf2fe..4fb92c4ca0 100644
--- a/makepanda/installpanda.py
+++ b/makepanda/installpanda.py
@@ -229,6 +229,14 @@ def InstallPanda(destdir="", prefix="/usr", outputdir="built", libdir=GetLibDir(
     DeleteBuildFiles(destdir+prefix+"/include/panda3d")
     DeleteEmptyDirs(destdir+prefix+"/include/panda3d")
 
+    # Change permissions on include directory.
+    os.chmod(destdir + prefix + "/include", 0o755)
+    for root, dirs, files in os.walk(destdir + prefix + "/include"):
+        for basename in dirs:
+            os.chmod(os.path.join(root, basename), 0o755)
+        for basename in files:
+            os.chmod(os.path.join(root, basename), 0o644)
+
     # rpmlint doesn't like this file, for some reason.
     if (os.path.isfile(destdir+prefix+"/share/panda3d/direct/leveleditor/copyfiles.pl")):
         os.remove(destdir+prefix+"/share/panda3d/direct/leveleditor/copyfiles.pl")
diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index f2c3d32f20..e06a90a83f 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -6979,8 +6979,8 @@ def MakeInstallerLinux():
         else:
             InstallPanda(destdir="targetroot", prefix="/usr", outputdir=GetOutputDir(), libdir=lib_dir)
             oscmd("chmod -R 755 targetroot/usr/share/panda3d")
-            oscmd("mkdir -p targetroot/usr/share/man/man1")
-            oscmd("cp doc/man/*.1 targetroot/usr/share/man/man1/")
+            oscmd("mkdir -m 0755 -p targetroot/usr/share/man/man1")
+            oscmd("install -m 0644 doc/man/*.1 targetroot/usr/share/man/man1/")
 
         oscmd("dpkg --print-architecture > "+GetOutputDir()+"/tmp/architecture.txt")
         pkg_arch = ReadFile(GetOutputDir()+"/tmp/architecture.txt").strip()
@@ -7145,8 +7145,8 @@ def MakeInstallerOSX():
     # Trailing newline is important, works around a bug in OSX
     WriteFile("dstroot/tools/etc/paths.d/Panda3D", "/Developer/Panda3D/bin\n")
 
-    oscmd("mkdir -p dstroot/tools/usr/local/share/man/man1")
-    oscmd("cp doc/man/*.1 dstroot/tools/usr/local/share/man/man1/")
+    oscmd("mkdir -m 0755 -p dstroot/tools/usr/local/share/man/man1")
+    oscmd("install -m 0644 doc/man/*.1 dstroot/tools/usr/local/share/man/man1/")
 
     for base in os.listdir(GetOutputDir()+"/bin"):
         binname = "dstroot/tools/Developer/Panda3D/bin/" + base