diff --git a/source/threads.tex b/source/threads.tex
index 7f294c2a5c..c89a25d2cf 100644
--- a/source/threads.tex
+++ b/source/threads.tex
@@ -3177,7 +3177,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Unblocks the execution of at least one atomic waiting operation on \tcode{*ptr}
+Unblocks the execution of at least one unspecified atomic waiting operation on \tcode{*ptr}
 that is eligible to be unblocked\iref{atomics.wait} by this call,
 if any such atomic waiting operations exist.
 
@@ -4152,7 +4152,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Unblocks the execution of at least one atomic waiting operation
+Unblocks the execution of at least one unspecified atomic waiting operation
 that is eligible to be unblocked\iref{atomics.wait} by this call,
 if any such atomic waiting operations exist.
 
@@ -5181,7 +5181,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Unblocks the execution of at least one atomic waiting operation
+Unblocks the execution of at least one unspecified atomic waiting operation
 that is eligible to be unblocked\iref{atomics.wait} by this call,
 if any such atomic waiting operations exist.
 
@@ -5489,7 +5489,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Unblocks the execution of at least one atomic waiting operation
+Unblocks the execution of at least one unspecified atomic waiting operation
 that is eligible to be unblocked\iref{atomics.wait} by this call,
 if any such atomic waiting operations exist.
 
@@ -5717,7 +5717,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Unblocks the execution of at least one atomic waiting operation
+Unblocks the execution of at least one unspecified atomic waiting operation
 that is eligible to be unblocked\iref{atomics.wait} by this call,
 if any such atomic waiting operations exist.