diff --git a/src/emc/rs274ngc/interp_cycles.cc b/src/emc/rs274ngc/interp_cycles.cc
index b62a7fde137..f3fc1461725 100644
--- a/src/emc/rs274ngc/interp_cycles.cc
+++ b/src/emc/rs274ngc/interp_cycles.cc
@@ -1197,7 +1197,7 @@ int Interp::convert_cycle_uv(int motion, //!< a g-code between G_81 and G_89, a
     block->p_number == -1.0 ? settings->cycle_p : block->p_number;
     if (block->dollar_flag){
         CHKS((block->dollar_number < 0 || block->dollar_number >= settings->num_spindles),
-            (_("Invalid spindle ($) numberin G74/G84 cycle")));
+            (_("Invalid spindle ($) number in G74/G84 cycle")));
         settings->active_spindle = (int)block->dollar_number;
     }
     CYCLE_MACRO(convert_cycle_g74_g84(block, CANON_PLANE_UV, aa, bb, clear_cc, cc,
diff --git a/src/emc/rs274ngc/interp_execute.cc b/src/emc/rs274ngc/interp_execute.cc
index de54d47bf64..58b4e899975 100644
--- a/src/emc/rs274ngc/interp_execute.cc
+++ b/src/emc/rs274ngc/interp_execute.cc
@@ -280,9 +280,13 @@ int Interp::execute_block(block_pointer block,   //!< pointer to a block of RS27
         return (convert_remapped_code(block,settings,STEP_SET_SPINDLE_SPEED,'S'));
     } else {
         if (block->dollar_flag){
-            CHKS((block->dollar_number < 0 || block->dollar_number >= settings->num_spindles),
+            CHKS((block->dollar_number < -1 || block->dollar_number >= settings->num_spindles),
                 (_("Invalid spindle ($) number in Spindle speed command")));
-            status = convert_speed(block->dollar_number, block, settings);
+            if (block->dollar_number == -1 ){
+                for (int i = 0; i < settings->num_spindles; status = convert_speed(i++, block, settings));
+            } else {
+                status = convert_speed(block->dollar_number, block, settings);
+            }
         } else {
             status = convert_speed(0, block, settings);
         }