diff --git a/src/mame/drivers/atarisy1.cpp b/src/mame/drivers/atarisy1.cpp
index 7e1604b4f05..07cf75a1fab 100644
--- a/src/mame/drivers/atarisy1.cpp
+++ b/src/mame/drivers/atarisy1.cpp
@@ -2492,7 +2492,7 @@ void atarisy1_state::init_slapstic()
 													   [this](offs_t offset, u16 &data, u16 mem_mask) { m_slapstic->tweak(offset >> 1); },
 													   [this](offs_t offset, u16 &data, u16 mem_mask) { m_slapstic->tweak(offset >> 1); });
 
-	// The slaptic seems to trigger on the whole rom, but that slows things down too much.  limit to the range marble madness actually needs
+	// The slapstic seems to trigger on the whole rom, but that slows things down too much.  limit to the range marble madness actually needs
 	m_maincpu->space(AS_PROGRAM).install_readwrite_tap(0x2ff5a, 0x2ff5b, 0, "slapstic",
 													   [this](offs_t offset, u16 &data, u16 mem_mask) { m_slapstic->tweak(offset >> 1); },
 													   [this](offs_t offset, u16 &data, u16 mem_mask) { m_slapstic->tweak(offset >> 1); });
diff --git a/src/mame/drivers/rampart.cpp b/src/mame/drivers/rampart.cpp
index cfa292561b9..1970a083430 100644
--- a/src/mame/drivers/rampart.cpp
+++ b/src/mame/drivers/rampart.cpp
@@ -498,7 +498,7 @@ void rampart_state::machine_start()
 	m_maincpu->space(AS_PROGRAM).install_readwrite_tap(0x140000, 0x147fff, 0x438000, "slapstic",
 													   [this](offs_t offset, u16 &data, u16 mem_mask) { m_slapstic->tweak(offset >> 1); },
 													   [this](offs_t offset, u16 &data, u16 mem_mask) { m_slapstic->tweak(offset >> 1); });
-	// The slaptic seems to trigger on the whole rom, but that slows things down too much.  limit to the range rampart actually needs
+	// The slapstic seems to trigger on the whole rom, but that slows things down too much.  limit to the range rampart actually needs
 	m_maincpu->space(AS_PROGRAM).install_readwrite_tap(0x040000, 0x041fff, 0x000000, "slapstic",
 													   [this](offs_t offset, u16 &data, u16 mem_mask) { m_slapstic->tweak(offset >> 1); },
 													   [this](offs_t offset, u16 &data, u16 mem_mask) { m_slapstic->tweak(offset >> 1); });