diff --git a/ref/gl/gl_alias.c b/ref/gl/gl_alias.c
index d9766755..71069a50 100644
--- a/ref/gl/gl_alias.c
+++ b/ref/gl/gl_alias.c
@@ -627,6 +627,7 @@ void Mod_LoadAliasModel( model_t *mod, const void *buffer, qboolean *loaded )
 	daliasframetype_t	*pframetype;
 	daliasskintype_t	*pskintype;
 	int		i, j, size;
+	char		poolname[MAX_VA_STRING];
 
 	if( loaded ) *loaded = false;
 	pinmodel = (daliashdr_t *)buffer;
@@ -641,7 +642,8 @@ void Mod_LoadAliasModel( model_t *mod, const void *buffer, qboolean *loaded )
 	if( pinmodel->numverts <= 0 || pinmodel->numtris <= 0 || pinmodel->numframes <= 0 )
 		return; // how to possible is make that?
 
-	mod->mempool = Mem_AllocPool( va( "^2%s^7", mod->name ));
+	Q_snprintf( poolname, sizeof( poolname ), "^2%s^7", mod->name );
+	mod->mempool = Mem_AllocPool( poolname );
 
 	// allocate space for a working header, plus all the data except the frames,
 	// skin and group info
diff --git a/ref/gl/gl_opengl.c b/ref/gl/gl_opengl.c
index 2beed166..d16738fd 100644
--- a/ref/gl/gl_opengl.c
+++ b/ref/gl/gl_opengl.c
@@ -335,6 +335,7 @@ qboolean GL_CheckExtension( const char *name, const dllfunc_t *funcs, const char
 	const dllfunc_t	*func;
 	cvar_t		*parm = NULL;
 	const char	*extensions_string;
+	char		desc[MAX_VA_STRING];
 
 	gEngfuncs.Con_Reportf( "GL_CheckExtension: %s ", name );
 	GL_SetExtension( r_ext, true );
@@ -342,7 +343,8 @@ qboolean GL_CheckExtension( const char *name, const dllfunc_t *funcs, const char
 	if( cvarname )
 	{
 		// system config disable extensions
-		parm = gEngfuncs.Cvar_Get( cvarname, "1", FCVAR_GLCONFIG|FCVAR_READ_ONLY, va( CVAR_GLCONFIG_DESCRIPTION, name ));
+		Q_snprintf( desc, sizeof( desc ), CVAR_GLCONFIG_DESCRIPTION, name );
+		parm = gEngfuncs.Cvar_Get( cvarname, "1", FCVAR_GLCONFIG|FCVAR_READ_ONLY, desc );
 	}
 
 	if(( parm && !CVAR_TO_BOOL( parm )) || ( !CVAR_TO_BOOL( gl_extensions ) && r_ext != GL_OPENGL_110 ))
@@ -763,6 +765,8 @@ void GL_InitExtensionsBigGL( void )
 
 void GL_InitExtensions( void )
 {
+	char value[MAX_VA_STRING];
+
 	GL_OnContextCreated();
 
 	// initialize gl extensions
@@ -803,8 +807,9 @@ void GL_InitExtensions( void )
 	if( GL_Support( GL_TEXTURE_2D_RECT_EXT ))
 		pglGetIntegerv( GL_MAX_RECTANGLE_TEXTURE_SIZE_EXT, &glConfig.max_2d_rectangle_size );
 
-	gEngfuncs.Cvar_Get( "gl_max_size", va( "%i", glConfig.max_2d_texture_size ), 0, "opengl texture max dims" );
-	gEngfuncs.Cvar_Set( "gl_anisotropy", va( "%f", bound( 0, gl_texture_anisotropy->value, glConfig.max_texture_anisotropy )));
+	Q_snprintf( value, sizeof( value ), "%i", glConfig.max_2d_texture_size );
+	gEngfuncs.Cvar_Get( "gl_max_size", value, 0, "opengl texture max dims" );
+	gEngfuncs.Cvar_SetValue( "gl_anisotropy", bound( 0, gl_texture_anisotropy->value, glConfig.max_texture_anisotropy ));
 
 	if( GL_Support( GL_TEXTURE_COMPRESSION_EXT ))
 		gEngfuncs.Image_AddCmdFlags( IL_DDS_HARDWARE );
diff --git a/ref/gl/gl_sprite.c b/ref/gl/gl_sprite.c
index 006fe135..7ed990f4 100644
--- a/ref/gl/gl_sprite.c
+++ b/ref/gl/gl_sprite.c
@@ -242,6 +242,7 @@ void Mod_LoadMapSprite( model_t *mod, const void *buffer, size_t size, qboolean
 	int		linedelta, numframes;
 	mspriteframe_t	*pspriteframe;
 	msprite_t		*psprite;
+	char		poolname[MAX_VA_STRING];
 
 	if( loaded ) *loaded = false;
 	Q_snprintf( texname, sizeof( texname ), "#%s", mod->name );
@@ -275,7 +276,8 @@ void Mod_LoadMapSprite( model_t *mod, const void *buffer, size_t size, qboolean
 
 	// determine how many frames we needs
 	numframes = (pix->width * pix->height) / (w * h);
-	mod->mempool = Mem_AllocPool( va( "^2%s^7", mod->name ));
+	Q_snprintf( poolname, sizeof( poolname ), "^2%s^7", mod->name );
+	mod->mempool = Mem_AllocPool( poolname );
 	psprite = Mem_Calloc( mod->mempool, sizeof( msprite_t ) + ( numframes - 1 ) * sizeof( psprite->frames ));
 	mod->cache.data = psprite;	// make link to extradata
 
diff --git a/ref/gl/gl_warp.c b/ref/gl/gl_warp.c
index 3144324d..5bb9703d 100644
--- a/ref/gl/gl_warp.c
+++ b/ref/gl/gl_warp.c
@@ -64,7 +64,7 @@ static qboolean CheckSkybox( const char *name, char out[6][MAX_STRING] )
 {
 	const char	*skybox_ext[3] = { "dds", "tga", "bmp" };
 	int		i, j, num_checked_sides;
-	const char	*sidename;
+	char		sidename[MAX_VA_STRING];
 
 	// search for skybox images
 	for( i = 0; i < 3; i++ )
@@ -74,7 +74,7 @@ static qboolean CheckSkybox( const char *name, char out[6][MAX_STRING] )
 		for( j = 0; j < 6; j++ )
 		{
 			// build side name
-			sidename = va( "%s%s.%s", name, r_skyBoxSuffix[j], skybox_ext[i] );
+			Q_snprintf( sidename, sizeof( sidename ), "%s%s.%s", name, r_skyBoxSuffix[j], skybox_ext[i] );
 			if( gEngfuncs.fsapi->FileExists( sidename, false ))
 			{
 				Q_strncpy( out[j], sidename, sizeof( out[j] ));
@@ -90,7 +90,7 @@ static qboolean CheckSkybox( const char *name, char out[6][MAX_STRING] )
 		for( j = 0; j < 6; j++ )
 		{
 			// build side name
-			sidename = va( "%s_%s.%s", name, r_skyBoxSuffix[j], skybox_ext[i] );
+			Q_snprintf( sidename, sizeof( sidename ), "%s_%s.%s", name, r_skyBoxSuffix[j], skybox_ext[i] );
 			if( gEngfuncs.fsapi->FileExists( sidename, false ))
 			{
 				Q_strncpy( out[j], sidename, sizeof( out[j] ));