diff --git a/CHANGELOG.md b/CHANGELOG.md
index e58932aba3ba..07a424ddbead 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,13 @@ This document contains a historical list of changes between releases. Only
 changes that impact end-user behavior are listed; changes to documentation or
 internal API changes are not present.
 
+v0.43.3 (2024-09-26)
+-------------------------
+
+### Bugfixes
+
+- Windows installer: Don't quote Alloy's binary path in the Windows Registry. (@jkroepke)
+
 v0.43.2 (2024-09-25)
 -------------------------
 
diff --git a/packaging/grafana-agent-flow/windows/install_script.nsis b/packaging/grafana-agent-flow/windows/install_script.nsis
index 7df80ab40d34..0070f1a14d74 100644
--- a/packaging/grafana-agent-flow/windows/install_script.nsis
+++ b/packaging/grafana-agent-flow/windows/install_script.nsis
@@ -135,7 +135,7 @@ Function InitializeRegistry
   nsExec::ExecToLog 'Reg.exe query "${REGKEY}" /reg:64 /ve'
   Pop $0
   ${If} $0 == 1
-    nsExec::ExecToLog 'Reg.exe add "${REGKEY}" /reg:64 /ve /d "\"$INSTDIR\grafana-agent-flow-windows-amd64.exe\""'
+    nsExec::ExecToLog 'Reg.exe add "${REGKEY}" /reg:64 /ve /d "$INSTDIR\grafana-agent-flow-windows-amd64.exe"'
     Pop $0 # Ignore return result
   ${EndIf}