diff --git a/src/devices/machine/idehd.cpp b/src/devices/machine/idehd.cpp
index d0207a46f17..f56c6f68558 100644
--- a/src/devices/machine/idehd.cpp
+++ b/src/devices/machine/idehd.cpp
@@ -13,8 +13,6 @@
 #define LOGPRINT(x) do { if (VERBOSE) logerror x; if (PRINTF_IDE_COMMANDS) osd_printf_debug x; } while (0)
 
 #define TIME_PER_SECTOR_WRITE               (attotime::from_usec(100))
-/* read time <2 breaks primrag2, ==100 breaks bm1stmix */
-#define TIME_PER_SECTOR_READ                (attotime::from_usec(2))
 #define TIME_PER_ROTATION                   (attotime::from_hz(5400/60))
 #define TIME_BETWEEN_SECTORS                (attotime::from_nsec(400))
 
@@ -415,7 +413,7 @@ void ata_mass_storage_device::fill_buffer()
 		if (m_sector_count > 0)
 		{
 			set_dasp(ASSERT_LINE);
-			start_busy(TIME_PER_SECTOR_READ, PARAM_COMMAND);
+			start_busy(TIME_BETWEEN_SECTORS, PARAM_COMMAND);
 		}
 		break;
 	}