diff --git a/DESCRIPTION b/DESCRIPTION
index 95569d5..1e9fd45 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,5 +1,5 @@
 Package: imcRtools
-Version: 1.7.7
+Version: 1.7.8
 Title: Methods for imaging mass cytometry data analysis
 Description: 
     This R package supports the handling and analysis of imaging mass cytometry 
diff --git a/NEWS b/NEWS
index 598c70e..7c314c0 100644
--- a/NEWS
+++ b/NEWS
@@ -209,3 +209,7 @@ Changes in version 1.7.7 (2023-10-02)
 
 + Bug fix: in rare cases the testInteractions p-values were not correctly computed due to machine precision issues
 
+Changes in version 1.7.8 (2023-10-19)
+
++ spatialCoords are not initialised with rownames anymore
+
diff --git a/R/utils.R b/R/utils.R
index a01aca8..72f0dd6 100644
--- a/R/utils.R
+++ b/R/utils.R
@@ -70,7 +70,7 @@
                                  spatialCoords(y) <- matrix(c(cur_props[[coords[1]]],
                                                               cur_props[[coords[2]]]),
                                                             ncol = 2, byrow = FALSE,
-                                                            dimnames = list(as.character(y$ObjectNumber),
+                                                            dimnames = list(NULL,
                                                                             c("Pos_X", "Pos_Y")))
                                  colData(y) <- cbind(colData(y),
                                                      cur_props[,!colnames(cur_props) %in%
@@ -257,7 +257,7 @@
                 cur_counts[[extract_coords_from[1]]],
                 cur_counts[[extract_coords_from[2]]]),
                 ncol = 2, byrow = FALSE,
-                dimnames = list(as.character(object$ObjectNumber),
+                dimnames = list(NULL,
                                 c("Pos_X", "Pos_Y")))
         }