diff --git a/Changes b/Changes
index 96216b8568..e5bf815f0b 100644
--- a/Changes
+++ b/Changes
@@ -1,7 +1,12 @@
 10.7.x.x (relative to 10.7.0.0a5)
 ========
 
+Fixes
+-----
 
+- CompoundData : Fixed bad formatting of exception messages [^1].
+
+[^1]: To be omitted from the notes for the final 10.7.0.0 release.
 
 10.7.0.0a5 (relative to 10.7.0.0a4)
 ==========
diff --git a/include/IECore/CompoundData.inl b/include/IECore/CompoundData.inl
index 2a212f2e97..ca07a1a2a4 100644
--- a/include/IECore/CompoundData.inl
+++ b/include/IECore/CompoundData.inl
@@ -102,7 +102,7 @@ T *CompoundData::member( const InternedString &name, bool throwExceptions, bool
 		{
 			if( throwExceptions )
 			{
-				throw Exception( fmt::format( "CompoundData child \"%s\" is not of type \"%s\".", name.value(), T::staticTypeName() ) );
+				throw Exception( fmt::format( "CompoundData child \"{}\" is not of type \"{}\".", name.value(), T::staticTypeName() ) );
 			}
 			else
 			{
@@ -120,7 +120,7 @@ T *CompoundData::member( const InternedString &name, bool throwExceptions, bool
 		}
 		else if( throwExceptions )
 		{
-			throw Exception( fmt::format( "CompoundData has no child named \"%s\".", name.value() ) );
+			throw Exception( fmt::format( "CompoundData has no child named \"{}\".", name.value() ) );
 		}
 		else
 		{