diff --git a/src/rec/recBo.c b/src/rec/recBo.c
index 7e926f99f..8720bc6d6 100644
--- a/src/rec/recBo.c
+++ b/src/rec/recBo.c
@@ -62,6 +62,7 @@
 #include	<stdioLib.h>
 #include	<lstLib.h>
 #include	<string.h>
+#include	<stdlib.h>
 #include	<wdLib.h>
 
 #include	<alarm.h>
diff --git a/src/rec/recCompress.c b/src/rec/recCompress.c
index 785456e12..a9f09b252 100644
--- a/src/rec/recCompress.c
+++ b/src/rec/recCompress.c
@@ -58,9 +58,9 @@
 #include	<types.h>
 #include	<stdioLib.h>
 #include	<lstLib.h>
-#include	<memLib.h>
 #include	<math.h>
 #include	<string.h>
+#include	<stdlib.h>
 
 #include	<alarm.h>
 #include	<dbDefs.h>
diff --git a/src/rec/recHistogram.c b/src/rec/recHistogram.c
index 06426af3a..89c4b139f 100644
--- a/src/rec/recHistogram.c
+++ b/src/rec/recHistogram.c
@@ -38,11 +38,11 @@
 #include     <types.h>
 #include     <stdioLib.h>
 #include     <lstLib.h>
-#include     <strLib.h>
+#include     <string.h>
 #include     <math.h>
 #include     <limits.h>
 #include     <wdLib.h>
-#include     <memLib.h>
+#include     <stdlib.h>
 
 #include     <alarm.h>
 #include     <callback.h>
diff --git a/src/rec/recWaveform.c b/src/rec/recWaveform.c
index dcd57c140..cec3ae739 100644
--- a/src/rec/recWaveform.c
+++ b/src/rec/recWaveform.c
@@ -59,8 +59,8 @@
 #include	<types.h>
 #include	<stdioLib.h>
 #include	<lstLib.h>
+#include	<stdlib.h>
 #include	<string.h>
-#include	<memLib.h>
 
 #include	<alarm.h>
 #include	<dbDefs.h>