diff --git a/processor/hashtable.m4 b/processor/hashtable.m4
index 6e35e5a..b20c6e7 100644
--- a/processor/hashtable.m4
+++ b/processor/hashtable.m4
@@ -122,7 +122,7 @@ define(`DEF_HASH_TABLE_FUNC', `
 				INDENT()
 				fprintf(stderr, "$2:\"");
 				xc_dprint_str_len(BUCKET_KEY_S(b), BUCKET_KEY_SIZE(b));
-				fprintf(stderr, "\" %d:h=%lu", BUCKET_KEY_SIZE(b), b->h);
+				fprintf(stderr, "\" %d:h=%lu ", BUCKET_KEY_SIZE(b), b->h);
 			')
 			if (sizeof(void *) == sizeof($2)) {
 				IFCOPY(`pnew->pData = &pnew->pDataPtr;')
diff --git a/processor/processor.m4 b/processor/processor.m4
index 58efbc4..d7afe51 100644
--- a/processor/processor.m4
+++ b/processor/processor.m4
@@ -210,7 +210,7 @@ DEF_STRUCT_P_FUNC(`zval_ptr', , `dnl {{{
 			IFCOPY(`
 				dnl fprintf(stderr, "copy from %p to %p\n", src[0], dst[0]);
 			')
-			IFDPRINT(`INDENT()`'fprintf(stderr, "[%p]", src[0]);')
+			IFDPRINT(`INDENT()`'fprintf(stderr, "[%p] ", src[0]);')
 			STRUCT_P_EX(zval, dst[0], src[0], `[0]', `', ` ')
 			FIXPOINTER_EX(zval, dst[0])
 		} while (0);
diff --git a/processor/struct.m4 b/processor/struct.m4
index 2303d08..e38dc99 100644
--- a/processor/struct.m4
+++ b/processor/struct.m4
@@ -59,7 +59,7 @@ DECL_STRUCT_P_FUNC(`$1', `$2', 1)
 		')')
 
 		IFDPRINT(`
-			fprintf(stderr, "%s", " {\n");
+			fprintf(stderr, "%s", "{\n");
 			indent ++;
 		')
 		$3`'
@@ -145,7 +145,7 @@ dnl {{{ STRUCT_P(1:type, 2:elm, 3:name=type)
 define(`STRUCT_P', `
 	DBG(`$0($*)')
 	if (src->$2) {
-		IFDPRINT(`INDENT()`'fprintf(stderr, "$1:$2");')
+		IFDPRINT(`INDENT()`'fprintf(stderr, "$1:$2 ");')
 		STRUCT_P_EX(`$1', `dst->$2', `src->$2', `$2', `$3')
 	}
 	else {
@@ -159,7 +159,7 @@ dnl {{{ STRUCT(1:type, 2:elm, 3:name=type)
 define(`STRUCT', `
 	DBG(`$0($*)')
 	assert(sizeof($1) == sizeof(src->$2));
-	IFDPRINT(`INDENT()`'fprintf(stderr, "$1:$2");')
+	IFDPRINT(`INDENT()`'fprintf(stderr, "$1:$2 ");')
 	STRUCT_P_EX(`$1', `dst->$2', `src->$2', `$2', `$3', `&')
 	DONE(`$2')
 ')