diff --git a/dev-libs/boost/boost-1.87.0-r3.ebuild b/dev-libs/boost/boost-1.87.0-r3.ebuild
index fd197c65f52fc..2065285a40ca2 100644
--- a/dev-libs/boost/boost-1.87.0-r3.ebuild
+++ b/dev-libs/boost/boost-1.87.0-r3.ebuild
@@ -53,6 +53,7 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-1.87.0-move.patch
 	"${FILESDIR}"/${PN}-1.87.0-smart_ptr-operator.patch
 	"${FILESDIR}"/${PN}-1.87.0-thread-typo.patch
+	"${FILESDIR}"/${PN}-1.87.0-solaris.patch
 )
 
 create_user-config.jam() {
diff --git a/dev-libs/boost/files/boost-1.87.0-solaris.patch b/dev-libs/boost/files/boost-1.87.0-solaris.patch
new file mode 100644
index 0000000000000..f0c8f9fbfe634
--- /dev/null
+++ b/dev-libs/boost/files/boost-1.87.0-solaris.patch
@@ -0,0 +1,25 @@
+for Solaris, part from upstream commit
+https://github.com/boostorg/process/commit/bb375f50bd5b362b087aab326df158a440882e29
+
+--- boost_1_87_0/libs/process/src/ext/cwd.cpp
++++ boost_1_87_0/libs/process/src/ext/cwd.cpp
+@@ -124,7 +124,7 @@
+             filesystem::path("/proc") / std::to_string(pid) / "cwd", ec
+             );
+ #elif defined(__sun)
+-    return fileystem::canonical(
++    return filesystem::canonical(
+             filesystem::path("/proc") / std::to_string(pid) / "path/cwd", ec
+             );
+ #endif
+--- boost_1_87_0/libs/process/src/ext/exe.cpp
++++ boost_1_87_0/libs/process/src/ext/exe.cpp
+@@ -138,7 +138,7 @@
+             filesystem::path("/proc") / std::to_string(pid) / "exe", ec
+             );
+ #elif defined(__sun)
+-    return fileystem::canonical(
++    return filesystem::canonical(
+             filesystem::path("/proc") / std::to_string(pid) / "path/a.out", ec
+             );
+ #endif