diff --git a/cathook/src/common.h b/cathook/src/common.h
index c2f3a88e..dfc2d523 100644
--- a/cathook/src/common.h
+++ b/cathook/src/common.h
@@ -22,6 +22,7 @@
 #include "trace.h"
 #include "cvwrapper.h"
 #include "netvars.h"
+#include "sstring.h"
 #include "prediction.h"
 #include "sdk.h"
 
diff --git a/cathook/src/helpers.cpp b/cathook/src/helpers.cpp
index 6fed4500..dff9d8e5 100644
--- a/cathook/src/helpers.cpp
+++ b/cathook/src/helpers.cpp
@@ -16,7 +16,7 @@ FILE* hConVarsFile = 0;
 void BeginConVars() {
 	passwd* pwd = getpwuid(getuid());
 	char* user = pwd->pw_name;
-	hConVarsFile = fopen(strfmt("/home/%s/.local/share/Steam/steamapps/common/Team Fortress 2/tf/cfg/cat_defaults.cfg", user), "w");
+	hConVarsFile = fopen((const char*)strfmt("/home/%s/.local/share/Steam/steamapps/common/Team Fortress 2/tf/cfg/cat_defaults.cfg", user), "w");
 	SetCVarInterface(interfaces::cvar);
 }
 
@@ -741,13 +741,13 @@ void EndPrediction() {
 	interfaces::gvars->frametime = oldFrametime;
 }*/
 
-char* strfmt(const char* fmt, ...) {
-	char buf[1024];
+sstring strfmt(const char* fmt, ...) {
+	sstring result(1024);
 	va_list list;
 	va_start(list, fmt);
-	vsprintf(buf, fmt, list);
+	vsprintf(result, fmt, list);
 	va_end(list);
-	return buf;
+	return result;
 }
 
 const char* powerups[] = {
diff --git a/cathook/src/helpers.h b/cathook/src/helpers.h
index 82f65e99..915e96f9 100644
--- a/cathook/src/helpers.h
+++ b/cathook/src/helpers.h
@@ -16,6 +16,7 @@ class CUserCmd;
 class CCommand;
 struct player_info_s;
 class Vector;
+class sstring;
 
 #define PI 3.14159265358979323846f
 #define RADPI 57.295779513082f
@@ -69,7 +70,7 @@ bool GetProjectileData(CachedEntity* weapon, float& speed, float& gravity);
 bool IsVectorVisible(Vector a, Vector b);
 relation GetRelation(CachedEntity* ent); // TODO new relations
 bool IsSentryBuster(CachedEntity* ent);
-char* strfmt(const char* fmt, ...);
+sstring strfmt(const char* fmt, ...);
 // TODO move that to weaponid.h
 bool IsAmbassador(CachedEntity* ent);
 
diff --git a/cathook/src/logging.cpp b/cathook/src/logging.cpp
index 2189db8c..f8f621ba 100644
--- a/cathook/src/logging.cpp
+++ b/cathook/src/logging.cpp
@@ -14,13 +14,14 @@
 
 #include "interfaces.h"
 #include "sdk.h"
+#include "sstring.h"
 
 FILE* logging::handle = 0;
 
 void logging::Initialize() {
 	passwd* pwd = getpwuid(getuid());
 	char* user = pwd->pw_name;
-	logging::handle = fopen(strfmt("/tmp/cathook-%s.log", user), "w");
+	logging::handle = fopen((const char*)strfmt("/tmp/cathook-%s.log", user), "w");
 }
 
 void logging::Info(const char* fmt, ...) {
diff --git a/cathook/src/sharedobj.cpp b/cathook/src/sharedobj.cpp
index 513fbe2e..29fe07d1 100644
--- a/cathook/src/sharedobj.cpp
+++ b/cathook/src/sharedobj.cpp
@@ -8,13 +8,14 @@
 #include "sharedobj.h"
 #include "logging.h"
 #include "helpers.h"
+#include "sstring.h"
 
 #include <unistd.h>
 #include <link.h>
 #include <dlfcn.h>
 
 const char* path_from_proc_maps(const char* name) {
-	FILE* proc_maps = fopen(strfmt("/proc/%i/maps", getpid()), "r");
+	FILE* proc_maps = fopen((const char*)strfmt("/proc/%i/maps", getpid()), "r");
 	if (!proc_maps) return (const char*)0;
 	char* buffer = new char[512];
 	while (fgets(buffer, 512, proc_maps)) {
diff --git a/cathook/src/sstring.h b/cathook/src/sstring.h
new file mode 100644
index 00000000..84b1031c
--- /dev/null
+++ b/cathook/src/sstring.h
@@ -0,0 +1,22 @@
+/*
+ * sstring.h
+ *
+ *  Created on: Dec 23, 2016
+ *      Author: nullifiedcat
+ */
+
+#ifndef SSTRING_H_
+#define SSTRING_H_
+
+class sstring {
+public:
+	inline sstring() { length = 0; p_String = 0; };
+	inline sstring(int length) { this->length = length; p_String = new char[length]; }
+	inline ~sstring() { delete [] p_String; }
+	inline operator const char*() const { return p_String; };
+	inline operator char*() const { return (char*)p_String; }
+	const char* p_String;
+	int length;
+};
+
+#endif /* SSTRING_H_ */