diff -ur zhu3d-4.2.6.orig/src/fntedit.cpp zhu3d-4.2.6/src/fntedit.cpp
--- zhu3d-4.2.6.orig/src/fntedit.cpp	2013-04-19 06:07:54.000000000 +0400
+++ zhu3d-4.2.6/src/fntedit.cpp	2019-04-26 03:51:14.490967959 +0300
@@ -203,6 +203,7 @@
 	if(index==3) { actLang=3; zhuLocale="fr"; }
 	if(index==4) { actLang=4; zhuLocale="zh"; }
 	if(index==5) { actLang=5; zhuLocale="cs"; }
+	if(index==6) { actLang=6; zhuLocale="ru"; }
 	setLangComboIndex();
 
 	QCoreApplication::removeTranslator(&zhuTranslator);
@@ -306,6 +307,7 @@
 	com01->addItem(tr("French"));
 	com01->addItem(tr("Chinese"));
 	com01->addItem(tr("Czech"));
+	com01->addItem(tr("Russian"));
 }
 
 /** Set actual combo-index depending on language */
@@ -318,6 +320,7 @@
 	if(zhuLocale=="fr") { com01->setCurrentIndex(3); return; }
 	if(zhuLocale=="zh") { com01->setCurrentIndex(4); return; }
 	if(zhuLocale=="cs") { com01->setCurrentIndex(5); return; }
+	if(zhuLocale=="ru") { com01->setCurrentIndex(6); return; }
 
 	/** Set default else */
 	zhuLocale="en";
@@ -333,6 +336,7 @@
 	if(zhuLocale=="fr") { return 3; }
 	if(zhuLocale=="zh") { return 4; }
 	if(zhuLocale=="cs") { return 5; }
+	if(zhuLocale=="ru") { return 6; }
 
 	/** No supported language found? Then return english */
 	return 1;
@@ -426,6 +430,7 @@
 	com01->setItemText(3,tr("French"));
 	com01->setItemText(4,tr("Chinese"));
 	com01->setItemText(5,tr("Czech"));
+	com01->setItemText(6,tr("Russian"));
 }
 
 
diff -ur zhu3d-4.2.6.orig/zhu3d.pro zhu3d-4.2.6/zhu3d.pro
--- zhu3d-4.2.6.orig/zhu3d.pro	2013-04-19 07:25:45.000000000 +0400
+++ zhu3d-4.2.6/zhu3d.pro	2019-04-26 03:53:22.102966250 +0300
@@ -199,12 +199,14 @@
                    $$SYSDIR/languages/zhu3d_de.ts \
                    $$SYSDIR/languages/zhu3d_zh.ts \
                    $$SYSDIR/languages/zhu3d_fr.ts \
+                   $$SYSDIR/languages/zhu3d_ru.ts \
                    $$SYSDIR/languages/zhu3d_cs.ts }
 else {
     TRANSLATIONS = ./system/languages/zhu3d_es.ts \
                    ./system/languages/zhu3d_de.ts \
                    ./system/languages/zhu3d_zh.ts \
                    ./system/languages/zhu3d_fr.ts \
+                   ./system/languages/zhu3d_ru.ts \
                    ./system/languages/zhu3d_cs.ts }