diff --git a/public/crtlib.c b/public/crtlib.c
index 7260595e..11efccc3 100644
--- a/public/crtlib.c
+++ b/public/crtlib.c
@@ -317,68 +317,6 @@ void Q_atov( float *vec, const char *str, size_t siz )
 	}
 }
 
-int Q_strnicmp( const char *s1, const char *s2, int n )
-{
-	int	c1, c2;
-
-	if( s1 == NULL )
-	{
-		if( s2 == NULL )
-			return 0;
-		else return -1;
-	}
-	else if( s2 == NULL )
-	{
-		return 1;
-	}
-
-	do {
-		c1 = *s1++;
-		c2 = *s2++;
-
-		if( !n-- ) return 0; // strings are equal until end point
-
-		if( c1 != c2 )
-		{
-			if( c1 >= 'a' && c1 <= 'z' ) c1 -= ('a' - 'A');
-			if( c2 >= 'a' && c2 <= 'z' ) c2 -= ('a' - 'A');
-			if( c1 != c2 ) return c1 < c2 ? -1 : 1;
-		}
-	} while( c1 );
-
-	// strings are equal
-	return 0;
-}
-
-int Q_strncmp( const char *s1, const char *s2, int n )
-{
-	int	c1, c2;
-
-	if( s1 == NULL )
-	{
-		if( s2 == NULL )
-			return 0;
-		else return -1;
-	}
-	else if( s2 == NULL )
-	{
-		return 1;
-	}
-
-	do {
-		c1 = *s1++;
-		c2 = *s2++;
-
-		// strings are equal until end point
-		if( !n-- ) return 0;
-		if( c1 != c2 ) return c1 < c2 ? -1 : 1;
-
-	} while( c1 );
-
-	// strings are equal
-	return 0;
-}
-
 static qboolean Q_starcmp( const char *pattern, const char *text )
 {
 	char		c, c1;
@@ -470,32 +408,8 @@ const char* Q_timestamp( int format )
 	return timestamp;
 }
 
-char *Q_strstr( const char *string, const char *string2 )
-{
-	int	c;
-	size_t	len;
-
-	if( !string || !string2 ) return NULL;
-
-	c = *string2;
-	len = Q_strlen( string2 );
-
-	while( string )
-	{
-		for( ; *string && *string != c; string++ );
-
-		if( *string )
-		{
-			if( !Q_strncmp( string, string2, len ))
-				break;
-			string++;
-		}
-		else return NULL;
-	}
-	return (char *)string;
-}
-
-char *Q_stristr( const char *string, const char *string2 )
+#if !defined( HAVE_STRCASESTR )
+const char *Q_stristr( const char *string, const char *string2 )
 {
 	int	c;
 	size_t	len;
@@ -517,8 +431,9 @@ char *Q_stristr( const char *string, const char *string2 )
 		}
 		else return NULL;
 	}
-	return (char *)string;
+	return string;
 }
+#endif // !defined( HAVE_STRCASESTR )
 
 int Q_vsnprintf( char *buffer, size_t buffersize, const char *format, va_list args )
 {
diff --git a/public/crtlib.h b/public/crtlib.h
index b03aa812..0bcf9ce7 100644
--- a/public/crtlib.h
+++ b/public/crtlib.h
@@ -16,9 +16,10 @@ GNU General Public License for more details.
 #ifndef STDLIB_H
 #define STDLIB_H
 
-#include <stdarg.h>
 #include <string.h>
+#include <stdarg.h>
 #include "build.h"
+#include "xash3d_types.h"
 
 // timestamp modes
 enum
@@ -60,14 +61,8 @@ float Q_atof( const char *str );
 void Q_atov( float *vec, const char *str, size_t siz );
 #define Q_strchr  strchr
 #define Q_strrchr strrchr
-#define Q_stricmp( s1, s2 ) Q_strnicmp( s1, s2, 99999 )
-int Q_strnicmp( const char *s1, const char *s2, int n );
-#define Q_strcmp( s1, s2 ) Q_strncmp( s1, s2, 99999 )
-int Q_strncmp( const char *s1, const char *s2, int n );
 qboolean Q_stricmpext( const char *s1, const char *s2 );
 const char *Q_timestamp( int format );
-char *Q_stristr( const char *string, const char *string2 );
-char *Q_strstr( const char *string, const char *string2 );
 #define Q_vsprintf( buffer, format, args ) Q_vsnprintf( buffer, 99999, format, args )
 int Q_vsnprintf( char *buffer, size_t buffersize, const char *format, va_list args );
 int Q_snprintf( char *buffer, size_t buffersize, const char *format, ... ) _format( 3 );
@@ -95,4 +90,58 @@ char *_COM_ParseFileSafe( char *data, char *token, const int size, unsigned int
 int matchpattern( const char *in, const char *pattern, qboolean caseinsensitive );
 int matchpattern_with_separator( const char *in, const char *pattern, qboolean caseinsensitive, const char *separators, qboolean wildcard_least_one );
 
+// libc implementations
+static inline int Q_strcmp( const char *s1, const char *s2 )
+{
+	return unlikely(!s1) ?
+		( !s2 ? 0 : -1 ) :
+		( unlikely(!s2) ? 1 : strcmp( s1, s2 ));
+}
+
+static inline int Q_strncmp( const char *s1, const char *s2, size_t n )
+{
+	return unlikely(!s1) ?
+		( !s2 ? 0 : -1 ) :
+		( unlikely(!s2) ? 1 : strncmp( s1, s2, n ));
+}
+
+static inline const char *Q_strstr( const char *s1, const char *s2 )
+{
+	return unlikely( !s1 || !s2 ) ? NULL : strstr( s1, s2 );
+}
+
+// libc extensions, be careful
+
+#if XASH_WIN32
+#define strcasecmp stricmp
+#define strncasecmp strnicmp
+#endif // XASH_WIN32
+
+static inline int Q_stricmp( const char *s1, const char *s2 )
+{
+	return unlikely(!s1) ?
+		( !s2 ? 0 : -1 ) :
+		( unlikely(!s2) ? 1 : strcasecmp( s1, s2 ));
+}
+
+static inline int Q_strnicmp( const char *s1, const char *s2, size_t n )
+{
+	return unlikely(!s1) ?
+		( !s2 ? 0 : -1 ) :
+		( unlikely(!s2) ? 1 : strncasecmp( s1, s2, n ));
+}
+
+#if defined( HAVE_STRCASESTR )
+#if XASH_WIN32
+#define strcasestr stristr
+#endif
+static inline const char *Q_stristr( const char *s1, const char *s2 )
+{
+	return unlikely( !s1 || !s2 ) ? NULL : strcasestr( s1, s2 );
+}
+#else // defined( HAVE_STRCASESTR )
+const char *Q_stristr( const char *s1, const char *s2 );
+#endif // defined( HAVE_STRCASESTR )
+
+
 #endif//STDLIB_H