diff --git a/configure/CONFIG_BASE_VERSION b/configure/CONFIG_BASE_VERSION
index 92b030648..890b5619c 100644
--- a/configure/CONFIG_BASE_VERSION
+++ b/configure/CONFIG_BASE_VERSION
@@ -23,10 +23,10 @@ BASE_3_15 = YES
 # EPICS_VERSION must be a number >0 and <256
 EPICS_VERSION = 3
 
-# EPICS_REVISION must be a number >=0 and <256 
+# EPICS_REVISION must be a number >=0 and <256
 EPICS_REVISION = 15
 
-# EPICS_MODIFICATION must be a number >=0 and <256 
+# EPICS_MODIFICATION must be a number >=0 and <256
 EPICS_MODIFICATION = 5
 
 # EPICS_PATCH_LEVEL must be a number (win32 resource file requirement)
@@ -35,8 +35,8 @@ EPICS_PATCH_LEVEL = 0
 
 # This will end in -DEV between official releases
 #EPICS_DEV_SNAPSHOT=-DEV
-EPICS_DEV_SNAPSHOT=-pre1
-#EPICS_DEV_SNAPSHOT=-pre1-DEV
+#EPICS_DEV_SNAPSHOT=-pre1
+EPICS_DEV_SNAPSHOT=-pre1-DEV
 #EPICS_DEV_SNAPSHOT=-pre2
 #EPICS_DEV_SNAPSHOT=-pre2-DEV
 #EPICS_DEV_SNAPSHOT=-rc1