diff --git a/src/testdir/test_profile.vim b/src/testdir/test_profile.vim
index 8aaac90..3abe898 100644
--- a/src/testdir/test_profile.vim
+++ b/src/testdir/test_profile.vim
@@ -5,6 +5,7 @@
 
 source shared.vim
 source screendump.vim
+source vim9.vim
 
 func Test_profile_func()
   call RunProfileFunc('func', 'let', 'let')
@@ -583,4 +584,21 @@
   call delete('XtestProfile')
 endfunc
 
+func Test_vim9_profiling()
+  " only tests that compiling and calling functions doesn't crash
+  let lines =<< trim END
+      vim9script
+      def Func()
+        Crash()
+      enddef
+      def Crash()
+      enddef
+      prof start /tmp/profile.log
+      prof func Func
+      Func()
+  END
+  call CheckScriptSuccess(lines)
+endfunc
+
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index dce32e7..279c49d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2409,
+/**/
     2408,
 /**/
     2407,
diff --git a/src/vim9.h b/src/vim9.h
index f8d51c5..76ec403 100644
--- a/src/vim9.h
+++ b/src/vim9.h
@@ -408,3 +408,13 @@
 
 // Used for "lnum" when a range is to be taken from the stack and "!" is used.
 #define LNUM_VARIABLE_RANGE_ABOVE -888
+
+#ifdef FEAT_PROFILE
+# define PROFILING(ufunc) (do_profiling == PROF_YES && (ufunc)->uf_profiling)
+# define INSTRUCTIONS(dfunc) \
+	((do_profiling == PROF_YES && (dfunc->df_ufunc)->uf_profiling) \
+	? (dfunc)->df_instr_prof : (dfunc)->df_instr)
+#else
+# define PROFILING FALSE
+# define INSTRUCTIONS(dfunc) ((dfunc)->df_instr)
+#endif
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 2dd3a4f..5b9f7f5 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -1775,9 +1775,9 @@
 		return FAIL;
 	    }
 	}
-	if (func_needs_compiling(ufunc, cctx->ctx_profiling)
+	if (func_needs_compiling(ufunc, PROFILING(ufunc))
 		&& compile_def_function(ufunc, ufunc->uf_ret_type == NULL,
-					    cctx->ctx_profiling, NULL) == FAIL)
+					       PROFILING(ufunc), NULL) == FAIL)
 	    return FAIL;
     }
 
@@ -2615,8 +2615,8 @@
 	return FAIL;
 
     // Need to compile any default values to get the argument types.
-    if (func_needs_compiling(ufunc, cctx->ctx_profiling)
-	    && compile_def_function(ufunc, TRUE, cctx->ctx_profiling, NULL)
+    if (func_needs_compiling(ufunc, PROFILING(ufunc))
+	    && compile_def_function(ufunc, TRUE, PROFILING(ufunc), NULL)
 								       == FAIL)
 	return FAIL;
     return generate_PUSHFUNC(cctx, ufunc->uf_name, ufunc->uf_func_type);
@@ -3111,7 +3111,7 @@
     clear_tv(&rettv);
 
     // Compile the function into instructions.
-    compile_def_function(ufunc, TRUE, cctx->ctx_profiling, cctx);
+    compile_def_function(ufunc, TRUE, PROFILING(ufunc), cctx);
 
     clear_evalarg(&evalarg, NULL);
 
@@ -5088,8 +5088,8 @@
 	r = eap->skip ? OK : FAIL;
 	goto theend;
     }
-    if (func_needs_compiling(ufunc, cctx->ctx_profiling)
-	    && compile_def_function(ufunc, TRUE, cctx->ctx_profiling, cctx)
+    if (func_needs_compiling(ufunc, PROFILING(ufunc))
+	    && compile_def_function(ufunc, TRUE, PROFILING(ufunc), cctx)
 								       == FAIL)
     {
 	func_ptr_unref(ufunc);
diff --git a/src/vim9execute.c b/src/vim9execute.c
index 4c144f6..bcdc5d1 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -181,6 +181,16 @@
 	return FAIL;
     }
 
+#ifdef FEAT_PROFILE
+    // Profiling might be enabled/disabled along the way.  This should not
+    // fail, since the function was compiled before and toggling profiling
+    // doesn't change any errors.
+    if (func_needs_compiling(ufunc, PROFILING(ufunc))
+	    && compile_def_function(ufunc, FALSE, PROFILING(ufunc), NULL)
+								       == FAIL)
+	return FAIL;
+#endif
+
     if (ufunc->uf_va_name != NULL)
     {
 	// Need to make a list out of the vararg arguments.
@@ -293,7 +303,7 @@
 
     // Set execution state to the start of the called function.
     ectx->ec_dfunc_idx = cdf_idx;
-    ectx->ec_instr = dfunc->df_instr;
+    ectx->ec_instr = INSTRUCTIONS(dfunc);
     entry = estack_push_ufunc(ufunc, 1);
     if (entry != NULL)
     {
@@ -542,7 +552,7 @@
     ectx->ec_frame_idx = STACK_TV(ectx->ec_frame_idx
 				       + STACK_FRAME_IDX_OFF)->vval.v_number;
     dfunc = ((dfunc_T *)def_functions.ga_data) + ectx->ec_dfunc_idx;
-    ectx->ec_instr = dfunc->df_instr;
+    ectx->ec_instr = INSTRUCTIONS(dfunc);
 
     if (ret_idx > 0)
     {
@@ -1103,6 +1113,7 @@
     return OK;
 }
 
+
 /*
  * Call a "def" function from old Vim script.
  * Return OK or FAIL.
@@ -1135,11 +1146,6 @@
     int		save_did_emsg_def = did_emsg_def;
     int		trylevel_at_start = trylevel;
     int		orig_funcdepth;
-#ifdef FEAT_PROFILE
-    int		profiling = do_profiling == PROF_YES && ufunc->uf_profiling;
-#else
-# define profiling FALSE
-#endif
 
 // Get pointer to item in the stack.
 #define STACK_TV(idx) (((typval_T *)ectx.ec_stack.ga_data) + idx)
@@ -1152,8 +1158,8 @@
 #define STACK_TV_VAR(idx) (((typval_T *)ectx.ec_stack.ga_data) + ectx.ec_frame_idx + STACK_FRAME_SIZE + idx)
 
     if (ufunc->uf_def_status == UF_NOT_COMPILED
-	    || (func_needs_compiling(ufunc, profiling)
-			 && compile_def_function(ufunc, FALSE, profiling, NULL)
+	    || (func_needs_compiling(ufunc, PROFILING(ufunc))
+		&& compile_def_function(ufunc, FALSE, PROFILING(ufunc), NULL)
 								      == FAIL))
     {
 	if (did_emsg_cumul + did_emsg == did_emsg_before)
@@ -1166,11 +1172,7 @@
 	// Check the function was really compiled.
 	dfunc_T	*dfunc = ((dfunc_T *)def_functions.ga_data)
 							 + ufunc->uf_dfunc_idx;
-	if ((
-#ifdef FEAT_PROFILE
-		    profiling ? dfunc->df_instr_prof :
-#endif
-		    dfunc->df_instr) == NULL)
+	if (INSTRUCTIONS(dfunc) == NULL)
 	{
 	    iemsg("using call_def_function() on not compiled function");
 	    return FAIL;
@@ -1309,11 +1311,7 @@
 	    ++ectx.ec_stack.ga_len;
 	}
 
-#ifdef FEAT_PROFILE
-	ectx.ec_instr = profiling ? dfunc->df_instr_prof : dfunc->df_instr;
-#else
-	ectx.ec_instr = dfunc->df_instr;
-#endif
+	ectx.ec_instr = INSTRUCTIONS(dfunc);
     }
 
     // Following errors are in the function, not the caller.