diff --git a/README.md b/README.md
index 0ce2de1..57d0156 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-![OAPV](/readme/img/oapv_logo_bar_256.png)
+![OAPV](/readme/img/oapv_logo_black_bar_256.png#gh-light-mode-only) ![OAPV](/readme/img/oapv_logo_white_bar_256.png#gh-dark-mode-only)
 # OpenAPV (Open Advanced Professional Video Codec)
 
 [![Build and test](https://github.com/AcademySoftwareFoundation/openapv/actions/workflows/build.yml/badge.svg)](https://github.com/AcademySoftwareFoundation/openapv/actions/workflows/build.yml)
@@ -119,7 +119,7 @@ For generating package ready for distribution (default deb) execute in build dir
 
 ## Versioning
 
-This project is using folowing veersioning scheme ``API_SET.MAJOR.MINOR.PATCH.``. It's mostly based on Semantic Versioning with addition of API_SET on first place.
+This project is using folowing versioning scheme ``API-SET.MAJOR.MINOR.PATCH``. It's mostly based on Semantic Versioning with addition of ``API-SET`` on first place.
 Project and library is following one common version number.
 
 ## License
@@ -127,5 +127,8 @@ Project and library is following one common version number.
 See [LICENSE](LICENSE) file for details.
 
 ## Graphic logo
-![OAPV](/readme/img/oapv_logo_bar_64.png) ![OAPV](/readme/img/oapv_logo_bar_128.png) ![OAPV](/readme/img/oapv_logo_bar_256.png)
-![OAPV](/readme/img/oapv_logo_btn_64.png) ![OAPV](/readme/img/oapv_logo_btn_96.png) ![OAPV](/readme/img/oapv_logo_btn_128.png)
+### logo for light mode
+![OAPV](/readme/img/oapv_logo_black_bar_64.png) ![OAPV](/readme/img/oapv_logo_black_bar_128.png) ![OAPV](/readme/img/oapv_logo_black_bar_256.png)
+
+### logo for dark mode
+![OAPV](/readme/img/oapv_logo_white_bar_64.png) ![OAPV](/readme/img/oapv_logo_white_bar_128.png) ![OAPV](/readme/img/oapv_logo_white_bar_256.png)
diff --git a/readme/img/oapv_logo_black_bar_128.png b/readme/img/oapv_logo_black_bar_128.png
new file mode 100644
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diff --git a/readme/img/oapv_logo_black_bar_256.png b/readme/img/oapv_logo_black_bar_256.png
new file mode 100644
index 0000000..849c7a7
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diff --git a/readme/img/oapv_logo_black_bar_512.png b/readme/img/oapv_logo_black_bar_512.png
new file mode 100644
index 0000000..d6f91a1
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diff --git a/readme/img/oapv_logo_black_bar_64.png b/readme/img/oapv_logo_black_bar_64.png
new file mode 100644
index 0000000..2139dd9
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diff --git a/readme/img/oapv_logo_white_bar_128.png b/readme/img/oapv_logo_white_bar_128.png
new file mode 100644
index 0000000..586cce1
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diff --git a/readme/img/oapv_logo_white_bar_256.png b/readme/img/oapv_logo_white_bar_256.png
new file mode 100644
index 0000000..91954cd
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diff --git a/readme/img/oapv_logo_white_bar_512.png b/readme/img/oapv_logo_white_bar_512.png
new file mode 100644
index 0000000..2aceffd
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diff --git a/readme/img/oapv_logo_white_bar_64.png b/readme/img/oapv_logo_white_bar_64.png
new file mode 100644
index 0000000..2bdaff2
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diff --git a/src/oapv.c b/src/oapv.c
index edd3a23..ac05287 100644
--- a/src/oapv.c
+++ b/src/oapv.c
@@ -2156,8 +2156,8 @@ int oapvd_info(void *au, int au_size, oapv_au_info_t *aui)
 const char *oapv_version(unsigned int *ver_num)
 {
     static char oapv_version_string[16];
-    snprintf(oapv_version_string, sizeof(oapv_version_string), "%d.%d.%d.%d",
-        OAPV_VER_APISET, OAPV_VER_MAJOR, OAPV_VER_MINOR, OAPV_VER_PATCH);
+    snprintf(oapv_version_string, sizeof(oapv_version_string), "%d.%d.%d.%d",
+        OAPV_VER_APISET, OAPV_VER_MAJOR, OAPV_VER_MINOR, OAPV_VER_PATCH);
 
     if(ver_num != NULL)
         *ver_num = OAPV_VER_NUM;