diff --git a/src/ca65/macro.c b/src/ca65/macro.c
index 704ed5d6f..68ecda6f6 100644
--- a/src/ca65/macro.c
+++ b/src/ca65/macro.c
@@ -203,7 +203,7 @@ static IdDesc* NewIdDesc (const StrBuf* Id)
 
     /* Initialize the struct */
     I->Next = 0;
-    I->Id   = AUTO_STRBUF_INITIALIZER;
+    SB_Init (&I->Id);
     SB_Copy (&I->Id, Id);
 
     /* Return the new struct */
@@ -228,7 +228,7 @@ static Macro* NewMacro (const StrBuf* Name, unsigned char Style)
     M->TokRoot    = 0;
     M->TokLast    = 0;
     M->Style	  = Style;
-    M->Name       = AUTO_STRBUF_INITIALIZER;
+    SB_Init (&M->Name);
     SB_Copy (&M->Name, Name);
 
     /* Insert the macro into the global macro list */
diff --git a/src/ca65/toklist.c b/src/ca65/toklist.c
index 1af5a06d6..0f8062dcc 100644
--- a/src/ca65/toklist.c
+++ b/src/ca65/toklist.c
@@ -67,7 +67,7 @@ TokNode* NewTokNode (void)
     T->Tok	= Tok;
     T->WS 	= WS;
     T->IVal	= IVal;
-    T->SVal     = AUTO_STRBUF_INITIALIZER;
+    SB_Init (&T->SVal);
     SB_Copy (&T->SVal, &SVal);
 
     /* Return the node */