diff --git a/packaging/grafana-agent-flow/windows/install_script.nsis b/packaging/grafana-agent-flow/windows/install_script.nsis
index 0d06eae01d76..7df80ab40d34 100644
--- a/packaging/grafana-agent-flow/windows/install_script.nsis
+++ b/packaging/grafana-agent-flow/windows/install_script.nsis
@@ -97,7 +97,7 @@ Section "install"
   Call InitializeRegistry
 
   # Create the service.
-  nsExec::ExecToLog 'sc create "Grafana Agent Flow" start= delayed-auto binpath= "$INSTDIR\grafana-agent-service-windows-amd64.exe"'
+  nsExec::ExecToLog 'sc create "Grafana Agent Flow" start= delayed-auto binpath= "\"$INSTDIR\grafana-agent-service-windows-amd64.exe\""'
   Pop $0
 
   # Start the service.
@@ -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}