diff --git a/lib/wind/gen-bidi.py b/lib/wind/gen-bidi.py
index 21839c255..e2efcbb55 100644
--- a/lib/wind/gen-bidi.py
+++ b/lib/wind/gen-bidi.py
@@ -42,7 +42,7 @@ import generate
 import rfc3454
 
 if len(sys.argv) != 3:
-    print "usage: %s rfc3454.txt outdir" % sys.argv[0]
+    print("usage: %s rfc3454.txt outdir" % sys.argv[0])
     sys.exit(1)
 
 tables = rfc3454.read(sys.argv[1])
diff --git a/lib/wind/gen-combining.py b/lib/wind/gen-combining.py
index 6f23af8ef..43e0d52eb 100644
--- a/lib/wind/gen-combining.py
+++ b/lib/wind/gen-combining.py
@@ -42,7 +42,7 @@ import generate
 import UnicodeData
 
 if len(sys.argv) != 3:
-    print "usage: %s UnicodeData.txt out-dir" % sys.argv[0]
+    print("usage: %s UnicodeData.txt out-dir" % sys.argv[0])
     sys.exit(1)
 
 ud = UnicodeData.read(sys.argv[1])
diff --git a/lib/wind/gen-errorlist.py b/lib/wind/gen-errorlist.py
index 29ab9a4bb..97646cf5a 100644
--- a/lib/wind/gen-errorlist.py
+++ b/lib/wind/gen-errorlist.py
@@ -44,7 +44,7 @@ import rfc4518
 import stringprep
 
 if len(sys.argv) != 3:
-    print "usage: %s rfc3454.txt out-dir" % sys.argv[0]
+    print("usage: %s rfc3454.txt out-dir" % sys.argv[0])
     sys.exit(1)
 
 tables = rfc3454.read(sys.argv[1])
@@ -104,7 +104,7 @@ for x in trans:
     (start, length, description, tables) = x
     symbols = stringprep.symbols(error_list, tables)
     if len(symbols) == 0:
-        print "no symbol for %s" % description
+        print("no symbol for %s" % description)
         sys.exit(1)
     errorlist_c.file.write("  {0x%x, 0x%x, %s}, /* %s: %s */\n"
                 % (start, length, symbols, ",".join(tables), description))
diff --git a/lib/wind/gen-map.py b/lib/wind/gen-map.py
index f10973534..dc10d6fae 100644
--- a/lib/wind/gen-map.py
+++ b/lib/wind/gen-map.py
@@ -45,7 +45,7 @@ import stringprep
 import util
 
 if len(sys.argv) != 3:
-    print "usage: %s rfc3454.txt out-dir" % sys.argv[0]
+    print("usage: %s rfc3454.txt out-dir" % sys.argv[0])
     sys.exit(1)
 
 tables = rfc3454.read(sys.argv[1])
@@ -114,7 +114,7 @@ trans = stringprep.sort_merge_trans(trans)
 
 for x in trans:
     if x[0] == 0xad:
-        print "fooresult %s" % ",".join(x[3])
+        print("fooresult %s" % ",".join(x[3]))
 
 for x in trans:
     (key, value, description, table) = x
@@ -130,7 +130,7 @@ for x in trans:
     (key, value, description, tables) = x
     symbols = stringprep.symbols(map_list, tables)
     if len(symbols) == 0:
-        print "no symbol for %s %s (%s)" % (key, description, tables)
+        print("no symbol for %s %s (%s)" % (key, description, tables))
         sys.exit(1)
     v = value.split()
     map_c.file.write("  {0x%x, %u, %u, %s}, /* %s: %s */\n"
diff --git a/lib/wind/gen-normalize.py b/lib/wind/gen-normalize.py
index 0955a54b9..daf3c3dc4 100644
--- a/lib/wind/gen-normalize.py
+++ b/lib/wind/gen-normalize.py
@@ -43,8 +43,8 @@ import UnicodeData
 import util
 
 if len(sys.argv) != 4:
-    print "usage: %s UnicodeData.txt"
-    " CompositionExclusions-3.2.0.txt out-dir" % sys.argv[0]
+    print("usage: %s UnicodeData.txt"
+    " CompositionExclusions-3.2.0.txt out-dir" % sys.argv[0])
     sys.exit(1)
 
 ud = UnicodeData.read(sys.argv[1])