diff --git a/DESCRIPTION b/DESCRIPTION
index 0568468..b5edb13 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: geosapi
 Type: Package
 Title: GeoServer REST API R Interface
-Version: 0.6-6
-Date: 2023-09-01
+Version: 0.6-7
+Date: 2023-10-03
 Authors@R: c(person("Emmanuel", "Blondel", role = c("aut", "cre"), email = "emmanuel.blondel1@gmail.com", comment = c(ORCID = "0000-0002-5870-5762")))
 Maintainer: Emmanuel Blondel <emmanuel.blondel1@gmail.com>
 Description: Provides an R interface to the GeoServer REST API, allowing to upload 
diff --git a/NEWS.md b/NEWS.md
index 79fd3a5..8da29d5 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,9 @@
+## [geosapi 0.6-7](https://cran.r-project.org/package=geosapi) | [![CRAN_Status_Badge](https://img.shields.io/badge/CRAN-unavailable-red.svg)](https://cran.r-project.org/package=geosapi)
+
+*Bug fixes**
+
+* [#64](https://github.com/eblondel/geosapi/issues/64) Fix workspace-based style creation/update/delete methods
+
 ## [geosapi 0.6-6](https://cran.r-project.org/package=geosapi) | [![CRAN_Status_Badge](https://img.shields.io/badge/CRAN-published-blue.svg)](https://cran.r-project.org/package=geosapi)
 
 **Enhancements**
diff --git a/R/GSStyleManager.R b/R/GSStyleManager.R
index 24df303..a731476 100644
--- a/R/GSStyleManager.R
+++ b/R/GSStyleManager.R
@@ -149,7 +149,7 @@ GSStyleManager <- R6Class("GSStyleManager",
       }
       
       reqUrl <- ""
-      if(!missing(ws) & is.null(ws)){
+      if(!missing(ws) & !is.null(ws)){
         reqUrl <- sprintf("/workspaces/%s", ws)
       }
       reqUrl <- paste0(reqUrl, "/styles?name=", name)
@@ -205,7 +205,7 @@ GSStyleManager <- R6Class("GSStyleManager",
       }
       
       reqUrl <- ""
-      if(!missing(ws) & is.null(ws)){
+      if(!missing(ws) & !is.null(ws)){
         reqUrl <- sprintf("/workspaces/%s", ws)
       }
       reqUrl <- paste0(reqUrl, sprintf("/styles/%s.xml", name))
@@ -243,7 +243,7 @@ GSStyleManager <- R6Class("GSStyleManager",
       deleted <- FALSE
       
       path <- ""
-      if(!missing(ws) & is.null(ws)){
+      if(!missing(ws) & !is.null(ws)){
         path <- sprintf("/workspaces/%s", ws)
       }
       path <- paste0(path, sprintf("/styles/%s", name))