diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index d4c5f9a3..a8145070 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -95,7 +95,7 @@ jobs:
         run: echo "GITHUB_CI_PR_SHA=${{github.event.pull_request.head.sha}}" >> "${GITHUB_ENV}"
 
       - name: Build ${{ matrix.model }}
-        run: make -C source/ -j$(nproc) model="${{ matrix.model }}" firmware-multi_compressed_European firmware-multi_compressed_Bulgarian+Russian+Serbian+Ukrainian firmware-multi_Chinese+Japanese
+        run: make -C source/ -j$(nproc) model="${{ matrix.model }}" firmware-multi_compressed_European firmware-multi_compressed_Belorussian+Bulgarian+Russian+Serbian+Ukrainian firmware-multi_Chinese+Japanese
 
       - name: Copy license files
         run: cp LICENSE scripts/LICENSE_RELEASE.md  source/Hexfile/
diff --git a/Documentation/Development.md b/Documentation/Development.md
index ef47bcaa..9e39209f 100644
--- a/Documentation/Development.md
+++ b/Documentation/Development.md
@@ -74,7 +74,7 @@ make -j$(nproc) model=Pinecil firmware-multi_European
 To build a Cyrillic compressed multi-language firmware for the Pinecil with as many simultaneous jobs as there are logical processors on macOS:
 
 ```
-make -j$(sysctl -n hw.logicalcpu) model=Pinecil firmware-multi_compressed_Bulgarian+Russian+Serbian+Ukrainian
+make -j$(sysctl -n hw.logicalcpu) model=Pinecil firmware-multi_compressed_Belorussian+Bulgarian+Russian+Serbian+Ukrainian
 ```
 
 To build a custom multi-language firmware including English and Simplified Chinese for the TS80:
diff --git a/Makefile b/Makefile
index 6eb3f543..20453f4c 100644
--- a/Makefile
+++ b/Makefile
@@ -199,7 +199,7 @@ build-all:
 # target to build multilang supported builds for Pinecil & PinecilV2
 build-multilang:
 	@for modelml in $(MODELS_ML); do \
-		$(MAKE)  -C source/  -j2  model=$${modelml}  firmware-multi_compressed_European  firmware-multi_compressed_Bulgarian+Russian+Serbian+Ukrainian  firmware-multi_Chinese+Japanese ; \
+		$(MAKE)  -C source/  -j2  model=$${modelml}  firmware-multi_compressed_European  firmware-multi_compressed_Belorussian+Bulgarian+Russian+Serbian+Ukrainian  firmware-multi_Chinese+Japanese ; \
 		mkdir  -p  $(OUT_DIR)/$${modelml}_multi-lang ; \
 		cp  $(OUT_HEX)/$${modelml}_multi_*.bin   $(OUT_DIR)/$${modelml}_multi-lang ; \
 		cp  $(OUT_HEX)/$${modelml}_multi_*.hex   $(OUT_DIR)/$${modelml}_multi-lang ; \
diff --git a/source/Makefile b/source/Makefile
index e7dd44c3..5b84ca92 100644
--- a/source/Makefile
+++ b/source/Makefile
@@ -31,8 +31,8 @@ LANGUAGE_GROUP_CUSTOM_LANGS=$(custom_multi_langs)
 LANGUAGE_GROUP_CUSTOM_NAME=Custom
 endif
 
-LANGUAGE_GROUP_CYRILLIC_LANGS=EN BG RU SR_CYRL SR_LATN UK
-LANGUAGE_GROUP_CYRILLIC_NAME=Bulgarian+Russian+Serbian+Ukrainian
+LANGUAGE_GROUP_CYRILLIC_LANGS=EN BE BG RU SR_CYRL SR_LATN UK
+LANGUAGE_GROUP_CYRILLIC_NAME=Belorussian+Bulgarian+Russian+Serbian+Ukrainian
 
 LANGUAGE_GROUP_EUR_LANGS=EN $(filter-out $(LANGUAGE_GROUP_CJK_LANGS) $(LANGUAGE_GROUP_CYRILLIC_LANGS),$(ALL_LANGUAGES))
 LANGUAGE_GROUP_EUR_NAME=European