diff --git a/editor/icons/SCsub b/editor/icons/SCsub
index 9bd036dfa9..64992a9f90 100644
--- a/editor/icons/SCsub
+++ b/editor/icons/SCsub
@@ -34,7 +34,7 @@ def make_editor_icons_action(target, source, env):
     s.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
     s.write("#ifndef _EDITOR_ICONS_H\n")
     s.write("#define _EDITOR_ICONS_H\n")
-    s.write("static const int editor_icons_count = %s;\n" % len(svg_icons))
+    s.write("static const int editor_icons_count = {};\n".format(len(svg_icons)))
     s.write("static const char *editor_icons_sources[] = {\n")
     s.write(icons_string.getvalue())
     s.write('};\n\n')
@@ -57,7 +57,7 @@ def make_editor_icons_action(target, source, env):
         if icon_name.endswith("BigThumb"):  # don't know a better way to handle this
             thumb_big_indices.append(str(index))
 
-        s.write('\t"%s"' % icon_name)
+        s.write('\t"{0}"'.format(icon_name))
 
         if fname != svg_icons[-1]:
             s.write(",")
@@ -69,13 +69,13 @@ def make_editor_icons_action(target, source, env):
 
     if thumb_medium_indices:
         s.write("\n\n")
-        s.write("static const int editor_md_thumbs_count = %s;\n" % len(thumb_medium_indices))
+        s.write("static const int editor_md_thumbs_count = {};\n".format(len(thumb_medium_indices)))
         s.write("static const int editor_md_thumbs_indices[] = {")
         s.write(", ".join(thumb_medium_indices))
         s.write("};\n")
     if thumb_big_indices:
         s.write("\n\n")
-        s.write("static const int editor_bg_thumbs_count = %s;\n" % len(thumb_big_indices))
+        s.write("static const int editor_bg_thumbs_count = {};\n".format(len(thumb_big_indices)))
         s.write("static const int editor_bg_thumbs_indices[] = {")
         s.write(", ".join(thumb_big_indices))
         s.write("};\n")
diff --git a/platform/osx/SCsub b/platform/osx/SCsub
index 5efe2d0b22..4dfa46528a 100644
--- a/platform/osx/SCsub
+++ b/platform/osx/SCsub
@@ -7,10 +7,10 @@ def make_debug(target, source, env):
     if (env["macports_clang"] != 'no'):
         mpprefix = os.environ.get("MACPORTS_PREFIX", "/opt/local")
         mpclangver = env["macports_clang"]
-        os.system(mpprefix + '/libexec/llvm-' + mpclangver + '/bin/llvm-dsymutil %s -o %s.dSYM' % (target[0], target[0]))
+        os.system(mpprefix + '/libexec/llvm-' + mpclangver + '/bin/llvm-dsymutil {0} -o {0}.dSYM'.format(target[0]))
     else:
-        os.system('dsymutil %s -o %s.dSYM' % (target[0], target[0]))
-    os.system('strip -u -r %s' % (target[0]))
+        os.system('dsymutil {0} -o {0}.dSYM'.format(target[0]))
+    os.system('strip -u -r {0}'.format(target[0]))
 
 files = [
     'crash_handler_osx.mm',
diff --git a/platform/windows/SCsub b/platform/windows/SCsub
index 8965b80fb7..ed3827353d 100644
--- a/platform/windows/SCsub
+++ b/platform/windows/SCsub
@@ -9,9 +9,9 @@ def make_debug_mingw(target, source, env):
         mingw_prefix = env["mingw_prefix_32"]
     else:
         mingw_prefix = env["mingw_prefix_64"]
-    os.system(mingw_prefix + 'objcopy --only-keep-debug %s %s.debugsymbols' % (target[0], target[0]))
-    os.system(mingw_prefix + 'strip --strip-debug --strip-unneeded %s' % (target[0]))
-    os.system(mingw_prefix + 'objcopy --add-gnu-debuglink=%s.debugsymbols %s' % (target[0], target[0]))
+    os.system(mingw_prefix + 'objcopy --only-keep-debug {0} {0}.debugsymbols'.format(target[0]))
+    os.system(mingw_prefix + 'strip --strip-debug --strip-unneeded {0}'.format(target[0]))
+    os.system(mingw_prefix + 'objcopy --add-gnu-debuglink={0}.debugsymbols {0}'.format(target[0]))
 
 common_win = [
     "context_gl_win.cpp",
diff --git a/platform/x11/SCsub b/platform/x11/SCsub
index b18757337a..d0f77892ef 100644
--- a/platform/x11/SCsub
+++ b/platform/x11/SCsub
@@ -4,9 +4,9 @@ import os
 Import('env')
 
 def make_debug(target, source, env):
-    os.system('objcopy --only-keep-debug %s %s.debugsymbols' % (target[0], target[0]))
-    os.system('strip --strip-debug --strip-unneeded %s' % (target[0]))
-    os.system('objcopy --add-gnu-debuglink=%s.debugsymbols %s' % (target[0], target[0]))
+    os.system('objcopy --only-keep-debug {0} {0}.debugsymbols'.format(target[0]))
+    os.system('strip --strip-debug --strip-unneeded {0}'.format(target[0]))
+    os.system('objcopy --add-gnu-debuglink={0}.debugsymbols {0}'.format(target[0]))
 
 common_x11 = [
     "context_gl_x11.cpp",