diff --git a/src/command.h b/src/command.h
index dc6d7ee46..b8d71bb1f 100644
--- a/src/command.h
+++ b/src/command.h
@@ -156,6 +156,7 @@ struct consvar_t //NULL, NULL, 0, NULL, NULL |, 0, NULL, NULL, 0, 0, NULL
 	INT32 flags;            // flags see cvflags_t above
 	CV_PossibleValue_t *PossibleValue; // table of possible values
 	void (*func)(void);   // called on change, if CV_CALL set
+	INT32 step_amount;
 	const char *description;
 	INT32 value;            // for INT32 and fixed_t
 	const char *string;   // value in string
@@ -217,7 +218,7 @@ struct CVarList;
 #define CVAR_INIT consvar_t
 #else
 #define CVAR_INIT( ... ) \
-{ __VA_ARGS__, NULL, 0, NULL, NULL, {0, {NULL}}, 0U, (char)0, NULL }
+{ __VA_ARGS__, 0, NULL, 0, NULL, NULL, {0, {NULL}}, 0U, (char)0, NULL }
 #endif
 
 extern consvar_t *consvar_vars; // list of registered console variables
diff --git a/src/cvars.cpp b/src/cvars.cpp
index 79e5f9613..39660dbba 100644
--- a/src/cvars.cpp
+++ b/src/cvars.cpp
@@ -92,6 +92,12 @@ struct consvar_t::Builder
 		return *this;
 	}
 
+	Builder& step_amount(INT32 step_amount)
+	{
+		var_.step_amount = step_amount;
+		return *this;
+	}
+
 	Builder& save()
 	{
 		var_.flags |= CV_SAVE;
diff --git a/src/k_menufunc.c b/src/k_menufunc.c
index f64b49adc..7b7c817a7 100644
--- a/src/k_menufunc.c
+++ b/src/k_menufunc.c
@@ -168,7 +168,7 @@ void M_ChangeCvarDirect(INT32 choice, consvar_t *cv)
 	}
 	else if (cv->flags & CV_FLOAT)
 	{
-		M_AddFloatVar(cv, (FRACUNIT/16) * choice);
+		M_AddFloatVar(cv, (cv->step_amount ? cv->step_amount : FRACUNIT/16) * choice);
 	}
 	else
 	{