Index: src/gfx/main.cpp
--- src/gfx/main.cpp.orig
+++ src/gfx/main.cpp
@@ -138,6 +138,8 @@ static struct option const longopts[] = {
     {NULL,                 no_argument,       NULL, 0  }
 };
 
+int pledge(const char *, const char *);
+
 static void printUsage(void) {
 	fputs("Usage: rgbgfx [-r stride] [-CmuVZ] [-v [-v ...]] [-a <attr_map> | -A]\n"
 	      "       [-b <base_ids>] [-c <colors>] [-d <depth>] [-L <slice>] [-N <nb_tiles>]\n"
@@ -581,6 +583,11 @@ static char *parseArgv(int argc, char **argv, bool &au
 
 int main(int argc, char *argv[]) {
 	bool autoAttrmap = false, autoTilemap = false, autoPalettes = false, autoPalmap = false;
+
+	if (pledge("stdio rpath wpath cpath", NULL) == -1) {
+		fputs("pledge", stderr);
+		exit(1);
+	}
 
 	struct AtFileStackEntry {
 		int parentInd; // Saved offset into parent argv