diff --git a/src/dev/devAiDvx2502.c b/src/dev/devAiDvx2502.c
index 1fb181ac7..a4cca25d4 100644
--- a/src/dev/devAiDvx2502.c
+++ b/src/dev/devAiDvx2502.c
@@ -55,10 +55,10 @@
 #include	<module_types.h>
 #include	<aiRecord.h>
 
-long init_record();
-long get_ioint_info();
-long read_ai();
-long special_linconv();
+static long init_record();
+static long get_ioint_info();
+static long read_ai();
+static long special_linconv();
 
 struct {
 	long		number;
diff --git a/src/dev/devAiSoft.c b/src/dev/devAiSoft.c
index f5b6eb9ec..afe8fc45f 100644
--- a/src/dev/devAiSoft.c
+++ b/src/dev/devAiSoft.c
@@ -56,8 +56,8 @@ long dbCaAddInlink();
 long dbCaGetLink();
 
 /* Create the dset for devAiSoft */
-long init_record();
-long read_ai();
+static long init_record();
+static long read_ai();
 struct {
 	long		number;
 	DEVSUPFUN	report;
diff --git a/src/dev/devAiSoftRaw.c b/src/dev/devAiSoftRaw.c
index f786b6a8b..4f2394945 100644
--- a/src/dev/devAiSoftRaw.c
+++ b/src/dev/devAiSoftRaw.c
@@ -56,9 +56,9 @@ long dbCaAddInlink();
 long dbCaGetLink();
 
 /* Create the dset for devAiSoftRaw */
-long init_record();
-long read_ai();
-long special_linconv();
+static long init_record();
+static long read_ai();
+static long special_linconv();
 struct {
 	long		number;
 	DEVSUPFUN	report;