diff --git a/src/dbStatic/devSup.h b/src/dbStatic/devSup.h
index 0104260b4..36de62c44 100644
--- a/src/dbStatic/devSup.h
+++ b/src/dbStatic/devSup.h
@@ -58,7 +58,7 @@ typedef struct dsxt {   /* device support extension table */
 
 /* These are defined in src/misc/iocInit.c */
 
-epicsShareDef struct dsxt devSoft_DSXT;
+epicsShareExtern struct dsxt devSoft_DSXT;
 epicsShareFunc void devExtend(dsxt *pdsxt);
 
 #ifdef __cplusplus