diff -uNr radare2-5.1.0/libr/core/cconfig.c radare2-5.1.0.mod/libr/core/cconfig.c
--- radare2-5.1.0/libr/core/cconfig.c	2021-01-25 14:41:12.000000000 +0000
+++ radare2-5.1.0.mod/libr/core/cconfig.c	2021-02-07 20:42:14.734203399 +0000
@@ -3070,7 +3070,7 @@
 		char *h = r_sys_getenv (R_SYS_HOME);
 		if (h) {
 			if (!strcmp (h, "/")) {
-				r_sys_setenv (R_SYS_HOME, "/data/local/tmp");
+				r_sys_setenv (R_SYS_HOME, "@TERMUX_HOME@");
 			}
 			free (h);
 		}
@@ -3515,7 +3515,7 @@
 		free (path);
 	}
 	SETCB ("dir.source", "", &cb_dirsrc, "Path to find source files");
-	SETPREF ("dir.types", "/usr/include", "Default path to look for cparse type files");
+	SETPREF ("dir.types", "@TERMUX_PREFIX@/include", "Default path to look for cparse type files");
 	SETPREF ("dir.libs", "", "Specify path to find libraries to load when bin.libs=true");
 	p = r_sys_getenv (R_SYS_HOME);
 	SETCB ("dir.home", r_str_get_fail (p, "/"), &cb_dirhome, "Path for the home directory");
@@ -3523,11 +3523,7 @@
 	p = r_sys_getenv (R_SYS_TMP);
 	SETCB ("dir.tmp", r_str_get (p), &cb_dirtmp, "Path of the tmp directory");
 	free (p);
-#if __ANDROID__
-	SETCB ("dir.projects", "/data/data/org.radare.radare2installer/radare2/projects", &cb_dir_projects, "Default path for projects");
-#else
 	SETCB ("dir.projects", R_JOIN_2_PATHS ("~", R2_HOME_PROJECTS), &cb_dir_projects, "Default path for projects");
-#endif
 	SETCB ("dir.zigns", R_JOIN_2_PATHS ("~", R2_HOME_ZIGNS), &cb_dirzigns, "Default path for zignatures (see zo command)");
 	SETPREF ("stack.reg", "SP", "Which register to use as stack pointer in the visual debug");
 	SETBPREF ("stack.bytes", "true", "Show bytes instead of words in stack");
@@ -3665,9 +3661,8 @@
 #else
 	if (r_file_exists ("/usr/bin/openURL")) { // iOS ericautils
 		r_config_set (cfg, "http.browser", "/usr/bin/openURL");
-	} else if (r_file_exists ("/system/bin/toolbox")) {
-		r_config_set (cfg, "http.browser",
-				"LD_LIBRARY_PATH=/system/lib am start -a android.intent.action.VIEW -d");
+	} else if (r_file_exists ("@TERMUX_PREFIX@/bin/termux-open")) {
+		r_config_set (cfg, "http.browser", "@TERMUX_PREFIX@/bin/termux-open");
 	} else if (r_file_exists ("/usr/bin/xdg-open")) {
 		r_config_set (cfg, "http.browser", "xdg-open");
 	} else if (r_file_exists ("/usr/bin/open")) {
@@ -3687,8 +3682,6 @@
 		SETPREF ("http.root", wwwroot, "http root directory");
 		free (wwwroot);
 	}
-#elif __ANDROID__
-	SETPREF ("http.root", "/data/data/org.radare.radare2installer/www", "http root directory");
 #else
 	SETPREF ("http.root", R2_WWWROOT, "http root directory");
 #endif