diff --git a/config/CONFIG.alpha b/config/CONFIG.alpha
index bb0055491..f5e5d1f64 100644
--- a/config/CONFIG.alpha
+++ b/config/CONFIG.alpha
@@ -61,7 +61,7 @@ CCC_NORMAL_INVOKE_W_YES = $(CCC) +p +w
 CCC_STRICT_INVOKE_W_YES = $(CCC) +p +w 
 CCC_LD_FLAGS =
 CCC_LD_LIBS = 
-CCC_TEMPL_INST_FLAG =
+CCC_TEMPL_INST_FLAG = -DEXPL_TEMPL
 G++_NORMAL_INVOKE_W_NO = $(G++) -ansi -pedantic -w
 G++_NORMAL_INVOKE_W_YES = $(G++) -ansi -pedantic -Wall 
 G++_STRICT_INVOKE_W_YES = $(G++) -ansi -pedantic -Wtraditional -Wall \