diff --git a/devel/osx/Modest.xcodeproj/project.xcworkspace/xcuserdata/alexanderborisov.xcuserdatad/UserInterfaceState.xcuserstate b/devel/osx/Modest.xcodeproj/project.xcworkspace/xcuserdata/alexanderborisov.xcuserdatad/UserInterfaceState.xcuserstate
index 78fed24..7397845 100644
Binary files a/devel/osx/Modest.xcodeproj/project.xcworkspace/xcuserdata/alexanderborisov.xcuserdatad/UserInterfaceState.xcuserstate and b/devel/osx/Modest.xcodeproj/project.xcworkspace/xcuserdata/alexanderborisov.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/examples/Makefile b/examples/Makefile
index dab68ae..8d0273f 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -12,6 +12,14 @@ MODEST_OPTIMIZATION_LEVEL ?= -O2
 CFLAGS ?= -Wall -Werror
 CFLAGS += $(MODEST_OPTIMIZATION_LEVEL) -fPIC --std=c99 -I../include
 
+MODEST_BUILD_WITHOUT_THREADS ?= NO
+ifeq ($(MODEST_BUILD_WITHOUT_THREADS),YES)
+    $(info Build Examples without POSIX Threads)
+else
+    $(info Build Examples with POSIX Threads)
+	CFLAGS += -pthread
+endif
+
 find_files_h = $(wildcard $(dir)/*.h)
 find_files_c = $(wildcard $(dir)/*.c)
 
diff --git a/source/mycss/namespace/init.c b/source/mycss/namespace/init.c
index 060daf9..07bc5ce 100644
--- a/source/mycss/namespace/init.c
+++ b/source/mycss/namespace/init.c
@@ -319,8 +319,9 @@ void mycss_namespace_print(mycss_namespace_t* ns, mycss_namespace_entry_t* ns_en
     }
     else if(ns_entry->ns_id == MyHTML_NAMESPACE_ANY)
         return; //fprintf(fh, "*");
-    else if(ns_entry->ns_id == MyHTML_NAMESPACE_UNDEF)
-        fprintf(fh, "");
+    else if(ns_entry->ns_id == MyHTML_NAMESPACE_UNDEF) {
+        /* some print */
+    }
     else {
         if(ns_entry->ns_id < MyHTML_NAMESPACE_LAST_ENTRY) {
             const char *ns_name = myhtml_namespace_name_by_id(ns_entry->ns_id, NULL);