diff --git a/src/gui/about.cpp b/src/gui/about.cpp
index e00359046..64f2cbae5 100644
--- a/src/gui/about.cpp
+++ b/src/gui/about.cpp
@@ -194,6 +194,7 @@ const char* aboutLine[]={
   "adpcm by superctr",
   "Nuked-OPL3/OPLL/OPM/OPN2/PSG by nukeykt",
   "YM3812-LLE, YMF262-LLE and YMF276-LLE by nukeykt",
+  "ESFMu by Kagamiin~",
   "ymfm by Aaron Giles",
   "MAME SN76496 by Nicola Salmoria",
   "MAME AY-3-8910 by Couriersud",
diff --git a/src/main.cpp b/src/main.cpp
index cbfdaa369..df9a9577f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -218,6 +218,7 @@ TAParamResult pVersion(String) {
   printf("- YM3812-LLE by nukeykt (GPLv2)\n");
   printf("- YMF262-LLE by nukeykt (GPLv2)\n");
   printf("- YMF276-LLE by nukeykt (GPLv2)\n");
+  printf("- ESFMu by Kagamiin~ (LGPLv2.1)\n");
   printf("- ymfm by Aaron Giles (BSD 3-clause)\n");
   printf("- adpcm by superctr (public domain)\n");
   printf("- MAME SN76496 emulation core by Nicola Salmoria (BSD 3-clause)\n");