diff --git a/src/gui/settings_manager.cpp b/src/gui/settings_manager.cpp
index f252ff87c..63865ded9 100644
--- a/src/gui/settings_manager.cpp
+++ b/src/gui/settings_manager.cpp
@@ -141,10 +141,10 @@ int CSettingsManager::exec(CMenuTarget* parent, const std::string &actionKey)
 			CHintBox * hintBox = new CHintBox(LOCALE_MESSAGEBOX_INFO, g_Locale->getText(LOCALE_SETTINGS_BACKUP));
 			hintBox->paint();
 
-			const char backup_sh[] = TARGET_PREFIX "/bin/backup.sh";
+			std::string backup_sh = find_executable("backup.sh");
 			std::string fname = "settings_" + getBackupSuffix(); // file ending is set by backup script;
-			dprintf(DEBUG_NORMAL, "[CSettingsManager]\t[%s - %d] executing [%s %s]\n", __func__, __LINE__, backup_sh, g_settings.backup_dir.c_str());
-			my_system(3, backup_sh, g_settings.backup_dir.c_str(), fname.c_str());
+			dprintf(DEBUG_NORMAL, "[CSettingsManager]\t[%s - %d] executing [%s %s]\n", __func__, __LINE__, backup_sh.c_str(), g_settings.backup_dir.c_str());
+			my_system(3, backup_sh.c_str(), g_settings.backup_dir.c_str(), fname.c_str());
 
 			hintBox->hide();
 			delete hintBox;
@@ -165,10 +165,10 @@ int CSettingsManager::exec(CMenuTarget* parent, const std::string &actionKey)
 			int result = ShowMsg(LOCALE_SETTINGS_RESTORE, g_Locale->getText(LOCALE_SETTINGS_RESTORE_WARN), CMsgBox::mbrNo, CMsgBox::mbYes | CMsgBox::mbNo);
 			if(result == CMsgBox::mbrYes)
 			{
-				const char restore_sh[] = TARGET_PREFIX "/bin/restore.sh";
+				std::string restore_sh = find_executable("restore.sh");
 				std::string restore_file = fileBrowser.getSelectedFile()->Name;
-				dprintf(DEBUG_NORMAL, "[CSettingsManager]\t[%s - %d] executing [%s %s]\n", __func__, __LINE__, restore_sh, restore_file.c_str());
-				my_system(2, restore_sh, restore_file.c_str());
+				dprintf(DEBUG_NORMAL, "[CSettingsManager]\t[%s - %d] executing [%s %s]\n", __func__, __LINE__, restore_sh.c_str(), restore_file.c_str());
+				my_system(2, restore_sh.c_str(), restore_file.c_str());
 			}
 		}
 		return res;
diff --git a/src/gui/update.cpp b/src/gui/update.cpp
index f385ddb80..e6e106f39 100644
--- a/src/gui/update.cpp
+++ b/src/gui/update.cpp
@@ -654,7 +654,8 @@ int CFlashUpdate::exec(CMenuTarget* parent, const std::string &actionKey)
 			   ofgwrite will copy this tarball to new rootfs.
 			   It's untared at first start of new image.
 			*/
-			my_system(3, TARGET_PREFIX "/bin/backup.sh", "/tmp", "backup_flash"); // file ending is set by backup script;
+			std::string backup_sh = find_executable("backup.sh");
+			my_system(3, backup_sh.c_str(), "/tmp", "backup_flash"); // file ending is set by backup script;
 			hintBox.hide();
 		}
 
@@ -766,10 +767,10 @@ int CFlashUpdate::exec(CMenuTarget* parent, const std::string &actionKey)
 	}
 	else // not image, install
 	{
-		const char install_sh[] = TARGET_PREFIX "/bin/install.sh";
-		dprintf(DEBUG_NORMAL, "[update] calling %s %s %s\n",install_sh, g_settings.update_dir.c_str(), filename.c_str() );
+		std::string install_sh = find_executable("install.sh");
+		dprintf(DEBUG_NORMAL, "[update] calling %s %s %s\n", install_sh.c_str(), g_settings.update_dir.c_str(), filename.c_str() );
 #ifndef DRYRUN
-		my_system(3, install_sh, g_settings.update_dir.c_str(), filename.c_str());
+		my_system(3, install_sh.c_str(), g_settings.update_dir.c_str(), filename.c_str());
 #endif
 		showGlobalStatus(100);
 		ShowHint(LOCALE_MESSAGEBOX_INFO, LOCALE_FLASHUPDATE_READY);