diff --git a/src/backend/utils/mmgr/aset.c b/src/backend/utils/mmgr/aset.c
index 77872e77bc..73cf677274 100644
--- a/src/backend/utils/mmgr/aset.c
+++ b/src/backend/utils/mmgr/aset.c
@@ -1378,7 +1378,7 @@ AllocSetStats(MemoryContext context,
 		char		stats_string[200];
 
 		snprintf(stats_string, sizeof(stats_string),
-				 "%zu total in %zd blocks; %zu free (%zd chunks); %zu used",
+				 "%zu total in %zu blocks; %zu free (%zu chunks); %zu used",
 				 totalspace, nblocks, freespace, freechunks,
 				 totalspace - freespace);
 		printfunc(context, passthru, stats_string, print_to_stderr);
diff --git a/src/backend/utils/mmgr/generation.c b/src/backend/utils/mmgr/generation.c
index 584cd614da..e1822c9d90 100644
--- a/src/backend/utils/mmgr/generation.c
+++ b/src/backend/utils/mmgr/generation.c
@@ -703,7 +703,7 @@ GenerationStats(MemoryContext context,
 		char		stats_string[200];
 
 		snprintf(stats_string, sizeof(stats_string),
-				 "%zu total in %zd blocks (%zd chunks); %zu free (%zd chunks); %zu used",
+				 "%zu total in %zu blocks (%zu chunks); %zu free (%zu chunks); %zu used",
 				 totalspace, nblocks, nchunks, freespace,
 				 nfreechunks, totalspace - freespace);
 		printfunc(context, passthru, stats_string, print_to_stderr);
diff --git a/src/backend/utils/mmgr/mcxt.c b/src/backend/utils/mmgr/mcxt.c
index 6919a73280..8fa1e1faaf 100644
--- a/src/backend/utils/mmgr/mcxt.c
+++ b/src/backend/utils/mmgr/mcxt.c
@@ -528,7 +528,7 @@ MemoryContextStatsDetail(MemoryContext context, int max_children,
 
 	if (print_to_stderr)
 		fprintf(stderr,
-				"Grand total: %zu bytes in %zd blocks; %zu free (%zd chunks); %zu used\n",
+				"Grand total: %zu bytes in %zu blocks; %zu free (%zu chunks); %zu used\n",
 				grand_totals.totalspace, grand_totals.nblocks,
 				grand_totals.freespace, grand_totals.freechunks,
 				grand_totals.totalspace - grand_totals.freespace);
@@ -547,7 +547,7 @@ MemoryContextStatsDetail(MemoryContext context, int max_children,
 		ereport(LOG_SERVER_ONLY,
 				(errhidestmt(true),
 				 errhidecontext(true),
-				 errmsg_internal("Grand total: %zu bytes in %zd blocks; %zu free (%zd chunks); %zu used",
+				 errmsg_internal("Grand total: %zu bytes in %zu blocks; %zu free (%zu chunks); %zu used",
 								 grand_totals.totalspace, grand_totals.nblocks,
 								 grand_totals.freespace, grand_totals.freechunks,
 								 grand_totals.totalspace - grand_totals.freespace)));
@@ -612,7 +612,7 @@ MemoryContextStatsInternal(MemoryContext context, int level,
 				for (i = 0; i <= level; i++)
 					fprintf(stderr, "  ");
 				fprintf(stderr,
-						"%d more child contexts containing %zu total in %zd blocks; %zu free (%zd chunks); %zu used\n",
+						"%d more child contexts containing %zu total in %zu blocks; %zu free (%zu chunks); %zu used\n",
 						ichild - max_children,
 						local_totals.totalspace,
 						local_totals.nblocks,
@@ -624,7 +624,7 @@ MemoryContextStatsInternal(MemoryContext context, int level,
 				ereport(LOG_SERVER_ONLY,
 						(errhidestmt(true),
 						 errhidecontext(true),
-						 errmsg_internal("level: %d; %d more child contexts containing %zu total in %zd blocks; %zu free (%zd chunks); %zu used",
+						 errmsg_internal("level: %d; %d more child contexts containing %zu total in %zu blocks; %zu free (%zu chunks); %zu used",
 										 level,
 										 ichild - max_children,
 										 local_totals.totalspace,
diff --git a/src/backend/utils/mmgr/slab.c b/src/backend/utils/mmgr/slab.c
index 553dd7f667..04783b8385 100644
--- a/src/backend/utils/mmgr/slab.c
+++ b/src/backend/utils/mmgr/slab.c
@@ -671,7 +671,7 @@ SlabStats(MemoryContext context,
 		char		stats_string[200];
 
 		snprintf(stats_string, sizeof(stats_string),
-				 "%zu total in %zd blocks; %zu free (%zd chunks); %zu used",
+				 "%zu total in %zu blocks; %zu free (%zu chunks); %zu used",
 				 totalspace, nblocks, freespace, freechunks,
 				 totalspace - freespace);
 		printfunc(context, passthru, stats_string, print_to_stderr);