diff --git a/src/bindings/php/SConscript b/src/bindings/php/SConscript
index 669460241417536f3b9388f832016d82d41b232c..1b9853c4e2d0b6e5d211a8ae5ccf041020a149df 100644
--- a/src/bindings/php/SConscript
+++ b/src/bindings/php/SConscript
@@ -4,7 +4,7 @@ Import('env')
 phpenv = env.Clone()
 
 phpenv.Append(CPPPATH = ['../../', '/usr/include/php5', '/usr/include/php5/main', '/usr/include/php5/Zend', '/usr/include/php5/TSRM'])
-phpenv.Append(CCFLAGS = ['-fpic', '-DSWIG', '-Wno-unused-variable', '-Wno-unused-label', '-Wno-unused-function', '-Wno-missing-field-initializers'])
+phpenv.Append(CCFLAGS = ['-fpic', '-DSWIG', '-Wno-unused-variable', '-Wno-unused-label', '-Wno-unused-function', '-Wno-missing-field-initializers', '-Wno-sign-compare'])
 phpenv.Append(SWIGFLAGS = ['-DHAMMER_INTERNAL__NO_STDARG_H', '-Isrc/', '-php', '-outdir', 'build/$VARIANT/src/bindings/php/'])
 
 phpenv.Command("hammer.i", "../swig/hammer.i", Copy("$TARGET", "$SOURCE"))