diff --git a/c64/,,config_custom.s b/c64/,,config_custom.s
index e023c716..1e03bdff 100644
--- a/c64/,,config_custom.s
+++ b/c64/,,config_custom.s
@@ -54,9 +54,9 @@
 // #define CONFIG_IEC_BURST_CIA2                 // please keep disabled for now
 // #define CONFIG_IEC_BURST_SOFT                 // please keep disabled for now
 
-// #define CONFIG_TAPE_NORMAL
+#define CONFIG_TAPE_NORMAL
 #define CONFIG_TAPE_TURBO
-// #define CONFIG_TAPE_AUTODETECT
+#define CONFIG_TAPE_AUTODETECT
 // #define CONFIG_TAPE_NO_KEY_SENSE
 // #define CONFIG_TAPE_NO_MOTOR_CONTROL
 // #define CONFIG_TAPE_NO_ERROR_CORRECTION
diff --git a/c64/basic/engine/do_error.s b/c64/basic/engine/do_error.s
index 6458b90c..47a893f2 100644
--- a/c64/basic/engine/do_error.s
+++ b/c64/basic/engine/do_error.s
@@ -38,12 +38,12 @@
 
 do_NOT_IMPLEMENTED_error:
 
-	ldx #36
+	ldx #IDX__EV7_28
 	bpl do_basic_error                 // branch always
 
 do_MEMORY_CORRUPT_error:
 
-	ldx #35
+	ldx #IDX__EOR_2A
 	bpl do_basic_error                 // branch always
 
 do_kernal_error:                       // .A = KERNAL error code, also almost matches BASIC error codes
@@ -144,10 +144,9 @@ do_basic_error:                        // error code in .X
 	// "?"
 	
 	phx_trash_a
-	jsr print_return
-	lda #$3F
-	jsr JCHROUT
-	pla
+	ldx #IDX__STR_RET_QM
+	jsr print_packed_misc_str
+	plx_trash_a
 
 	// Error message text + " ERROR"
 
diff --git a/tools/generate_strings.cc b/tools/generate_strings.cc
index e0c9da64..f381b616 100644
--- a/tools/generate_strings.cc
+++ b/tools/generate_strings.cc
@@ -306,6 +306,7 @@ const StringEntryList GLOBAL_Errors =  { ListType::STRINGS_BASIC, "errors",
 const StringEntryList GLOBAL_MiscStrings =  { ListType::STRINGS_BASIC, "misc",
 {
 	// STD    M65    X16   --- misc strings as on CBM machines
+	{ true,  true,  true,  "STR_RET_QM",  "\r?"                 }, 
 	{ true,  true,  true,  "STR_BYTES",   " BASIC BYTES FREE"   }, // https://github.com/stefanhaustein/expressionparser
 	{ true,  true,  true,  "STR_READY",   "\rREADY.\r"          }, // https://www.ibm.com/support/knowledgecenter/zosbasics/com.ibm.zos.zconcepts/zconc_whatistsonative.htm https://github.com/stefanhaustein/expressionparser
 	{ true,  true,  true,  "STR_ERROR",   " ERROR"              }, // simply the word error that is attached to the other parts of messages https://fjkraan.home.xs4all.nl/comp/apple2faq/app2asoftfaq.html