diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 6bc1a6b46d..e4e9ce7398 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -892,8 +892,8 @@ static int	emode_for_corrupt_record(int emode, XLogRecPtr RecPtr);
 static void XLogFileClose(void);
 static void PreallocXlogFiles(XLogRecPtr endptr);
 static void RemoveTempXlogFiles(void);
-static void RemoveOldXlogFiles(XLogSegNo segno, XLogRecPtr RedoRecPtr, XLogRecPtr endptr);
-static void RemoveXlogFile(const char *segname, XLogRecPtr RedoRecPtr, XLogRecPtr endptr);
+static void RemoveOldXlogFiles(XLogSegNo segno, XLogRecPtr pRedoRecPtr, XLogRecPtr endptr);
+static void RemoveXlogFile(const char *segname, XLogRecPtr pRedoRecPtr, XLogRecPtr endptr);
 static void UpdateLastRemovedPtr(char *filename);
 static void ValidateXLOGDirectoryStructure(void);
 static void CleanupBackupHistory(void);
@@ -2299,7 +2299,7 @@ assign_checkpoint_completion_target(double newval, void *extra)
  * XLOG segments? Returns the highest segment that should be preallocated.
  */
 static XLogSegNo
-XLOGfileslop(XLogRecPtr RedoRecPtr)
+XLOGfileslop(XLogRecPtr pRedoRecPtr)
 {
 	XLogSegNo	minSegNo;
 	XLogSegNo	maxSegNo;
@@ -2311,9 +2311,9 @@ XLOGfileslop(XLogRecPtr RedoRecPtr)
 	 * correspond to. Always recycle enough segments to meet the minimum, and
 	 * remove enough segments to stay below the maximum.
 	 */
-	minSegNo = RedoRecPtr / wal_segment_size +
+	minSegNo = pRedoRecPtr / wal_segment_size +
 		ConvertToXSegs(min_wal_size_mb, wal_segment_size) - 1;
-	maxSegNo = RedoRecPtr / wal_segment_size +
+	maxSegNo = pRedoRecPtr / wal_segment_size +
 		ConvertToXSegs(max_wal_size_mb, wal_segment_size) - 1;
 
 	/*
@@ -2328,7 +2328,7 @@ XLOGfileslop(XLogRecPtr RedoRecPtr)
 	/* add 10% for good measure. */
 	distance *= 1.10;
 
-	recycleSegNo = (XLogSegNo) ceil(((double) RedoRecPtr + distance) /
+	recycleSegNo = (XLogSegNo) ceil(((double) pRedoRecPtr + distance) /
 									wal_segment_size);
 
 	if (recycleSegNo < minSegNo)
@@ -3954,7 +3954,7 @@ RemoveTempXlogFiles(void)
  * whether we want to recycle rather than delete no-longer-wanted log files.
  */
 static void
-RemoveOldXlogFiles(XLogSegNo segno, XLogRecPtr RedoRecPtr, XLogRecPtr endptr)
+RemoveOldXlogFiles(XLogSegNo segno, XLogRecPtr pRedoRecPtr, XLogRecPtr endptr)
 {
 	DIR		   *xldir;
 	struct dirent *xlde;
@@ -3997,7 +3997,7 @@ RemoveOldXlogFiles(XLogSegNo segno, XLogRecPtr RedoRecPtr, XLogRecPtr endptr)
 				/* Update the last removed location in shared memory first */
 				UpdateLastRemovedPtr(xlde->d_name);
 
-				RemoveXlogFile(xlde->d_name, RedoRecPtr, endptr);
+				RemoveXlogFile(xlde->d_name, pRedoRecPtr, endptr);
 			}
 		}
 	}
@@ -4078,7 +4078,7 @@ RemoveNonParentXlogFiles(XLogRecPtr switchpoint, TimeLineID newTLI)
  * somewhat arbitrarily, 10 future segments.
  */
 static void
-RemoveXlogFile(const char *segname, XLogRecPtr RedoRecPtr, XLogRecPtr endptr)
+RemoveXlogFile(const char *segname, XLogRecPtr pRedoRecPtr, XLogRecPtr endptr)
 {
 	char		path[MAXPGPATH];
 #ifdef WIN32
@@ -4094,10 +4094,10 @@ RemoveXlogFile(const char *segname, XLogRecPtr RedoRecPtr, XLogRecPtr endptr)
 		 * Initialize info about where to try to recycle to.
 		 */
 		XLByteToSeg(endptr, endlogSegNo, wal_segment_size);
-		if (RedoRecPtr == InvalidXLogRecPtr)
+		if (pRedoRecPtr == InvalidXLogRecPtr)
 			recycleSegNo = endlogSegNo + 10;
 		else
-			recycleSegNo = XLOGfileslop(RedoRecPtr);
+			recycleSegNo = XLOGfileslop(pRedoRecPtr);
 	}
 	else
 		recycleSegNo = 0;		/* keep compiler quiet */