diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index e232c8f47..2211bda88 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -5367,7 +5367,7 @@ void home_all_axes() { gcode_G28(true); }
    *
    *   X   Probe X position (default current X)
    *   Y   Probe Y position (default current Y)
-   *   E   Engage the probe for each probe
+   *   E   Engage the probe for each probe (default 1)
    */
   inline void gcode_G30() {
     const float xpos = parser.linearval('X', current_position[X_AXIS] + X_PROBE_OFFSET_FROM_EXTRUDER),
@@ -5382,7 +5382,7 @@ void home_all_axes() { gcode_G28(true); }
 
     setup_for_endstop_or_probe_move();
 
-    const ProbePtRaise raise_after = parser.boolval('E') ? PROBE_PT_STOW : PROBE_PT_NONE;
+    const ProbePtRaise raise_after = parser.boolval('E', true) ? PROBE_PT_STOW : PROBE_PT_NONE;
     const float measured_z = probe_pt(xpos, ypos, raise_after, parser.intval('V', 1));
 
     if (!isnan(measured_z)) {
diff --git a/Marlin/parser.h b/Marlin/parser.h
index 6676f228d..165b55d1c 100644
--- a/Marlin/parser.h
+++ b/Marlin/parser.h
@@ -317,7 +317,7 @@ public:
 
   // Provide simple value accessors with default option
   FORCE_INLINE static float    floatval(const char c, const float dval=0.0)   { return seenval(c) ? value_float()        : dval; }
-  FORCE_INLINE static bool     boolval(const char c)                          { return seenval(c) ? value_bool()         : seen(c); }
+  FORCE_INLINE static bool     boolval(const char c, const bool dval=false)   { return seenval(c) ? value_bool()         : (seen(c) ? true : dval); }
   FORCE_INLINE static uint8_t  byteval(const char c, const uint8_t dval=0)    { return seenval(c) ? value_byte()         : dval; }
   FORCE_INLINE static int16_t  intval(const char c, const int16_t dval=0)     { return seenval(c) ? value_int()          : dval; }
   FORCE_INLINE static uint16_t ushortval(const char c, const uint16_t dval=0) { return seenval(c) ? value_ushort()       : dval; }