diff --git a/polymer/eduke32/Makefile b/polymer/eduke32/Makefile
index 17728a493..7b14db293 100644
--- a/polymer/eduke32/Makefile
+++ b/polymer/eduke32/Makefile
@@ -471,7 +471,7 @@ $(OBJ)/luaJIT_BC_%.$o: $(MAKEFILE_COMMON_DIR)/source/lunatic/%.lua
 	$(COMPILE_STATUS)
 	if $(LUAJIT) -bg $(LUAJIT_BCOPTS) $< $@; then $(COMPILE_OK); else $(COMPILE_FAILED); fi
 
-# Same thing for defs.ilua which I'm too reluctant to rename now:
+# Same thing for defs*.ilua which I'm too reluctant to rename now:
 # NOTE: The target path must match EXACTLY with that of the DEFS_BC_SIZE
 # determination in Makefile.common, because it is embedded into the bytecode as
 # debugging information.
diff --git a/polymer/eduke32/Makefile.common b/polymer/eduke32/Makefile.common
index 2795942ba..1eb13a0b8 100644
--- a/polymer/eduke32/Makefile.common
+++ b/polymer/eduke32/Makefile.common
@@ -479,10 +479,16 @@ ifneq ($(LUNATIC),0)
     ifndef DEFS_BC_SIZE
         DEFS_BC_SIZE := $(shell $(LUAJIT) -bg -t h $(MAKEFILE_COMMON_DIR)/source/lunatic/defs.ilua -)
         DEFS_BC_SIZE := $(word 3, $(DEFS_BC_SIZE))
-        # Pass the bytecode size to the sub-makes, too.
+        # Pass it to the sub-makes, too.
         export DEFS_BC_SIZE
     endif
-    BASECOMMONFLAGS+= -DLUNATIC_DEFS_BC_SIZE=$(DEFS_BC_SIZE)
+    # Determine size of defs_m32.ilua bytecode once.
+    ifndef DEFS_M32_BC_SIZE
+        DEFS_M32_BC_SIZE := $(shell $(LUAJIT) -bg -t h $(MAKEFILE_COMMON_DIR)/source/lunatic/defs_m32.ilua -)
+        DEFS_M32_BC_SIZE := $(word 3, $(DEFS_M32_BC_SIZE))
+        export DEFS_M32_BC_SIZE
+    endif
+    BASECOMMONFLAGS+= -DLUNATIC_DEFS_BC_SIZE=$(DEFS_BC_SIZE) -DLUNATIC_DEFS_M32_BC_SIZE=$(DEFS_M32_BC_SIZE)
 
     ifeq ($(PLATFORM),WINDOWS)
         BASELIBS+= -lluajit
diff --git a/polymer/eduke32/source/astub.c b/polymer/eduke32/source/astub.c
index 10c45387e..0f21531ca 100644
--- a/polymer/eduke32/source/astub.c
+++ b/polymer/eduke32/source/astub.c
@@ -10507,7 +10507,10 @@ int32_t ExtInit(void)
 #ifdef LUNATIC
     if (Em_CreateState(&g_EmState) == 0)
     {
-        i = L_RunOnce(&g_EmState, "defs_m32.ilua");
+        extern const char luaJIT_BC_defs_m32[];
+
+        i = L_RunString(&g_EmState, (char *)luaJIT_BC_defs_m32, 0,
+                        LUNATIC_DEFS_M32_BC_SIZE, "defs_m32.ilua");
         if (i != 0)
         {
             Em_DestroyState(&g_EmState);
diff --git a/polymer/eduke32/source/lunatic/dynsymlist_m32 b/polymer/eduke32/source/lunatic/dynsymlist_m32
index 1a16f8235..42e1080fe 100644
--- a/polymer/eduke32/source/lunatic/dynsymlist_m32
+++ b/polymer/eduke32/source/lunatic/dynsymlist_m32
@@ -90,6 +90,7 @@ OSD_Printf;
 
 crc32once;
 
+luaJIT_BC_defs_m32;
 luaJIT_BC_defs_common;
 luaJIT_BC_engine_maptext;
 luaJIT_BC_engine;