diff --git a/Source/effects.cpp b/Source/effects.cpp
index cd1c68ced..4fff300bb 100644
--- a/Source/effects.cpp
+++ b/Source/effects.cpp
@@ -107,6 +107,7 @@ TSFX sgSFX[] = {
 /*IS_CAST8*/      { sfx_MISC,                  "sfx\\misc\\cast8.wav",        nullptr },
 /*IS_REPAIR*/     { sfx_MISC,                  "sfx\\misc\\repair.wav",       nullptr },
 /*LS_ACID*/       { sfx_MISC,                  "sfx\\misc\\acids1.wav",       nullptr },
+/*LS_ACIDS*/      { sfx_MISC,                  "sfx\\misc\\acids2.wav",       nullptr },
 /*LS_APOC*/       { sfx_MISC,                  "sfx\\misc\\apoc.wav",         nullptr },
 /*LS_BLODSTAR*/   { sfx_MISC,                  "sfx\\misc\\blodstar.wav",     nullptr },
 /*LS_BLSIMPT*/    { sfx_MISC,                  "sfx\\misc\\blsimpt.wav",      nullptr },
diff --git a/Source/effects.h b/Source/effects.h
index 5f6ac0966..4cc81fc14 100644
--- a/Source/effects.h
+++ b/Source/effects.h
@@ -194,6 +194,7 @@ enum _sfx_id : int16_t {
 	IS_CAST8,
 	IS_REPAIR,
 	LS_ACID,
+	LS_ACIDS,
 	LS_APOC,
 	LS_BLODSTAR,
 	LS_BLSIMPT,