diff --git a/man/mosaic.Rd b/man/mosaic.Rd
index 300421451..9997a8d26 100644
--- a/man/mosaic.Rd
+++ b/man/mosaic.Rd
@@ -28,7 +28,7 @@ This method is similar to the simpler, but much faster, \code{\link{merge}} meth
   \item{x}{SpatRaster}
   \item{y}{object of same class as \code{x}}
   \item{...}{additional SpatRasters}
-  \item{fun}{character. One of "sum", "mean", "median", "min", "max"}
+  \item{fun}{character. One of "mean", "median", "min", "max", "modal", "sum", "first", "last"}
   \item{filename}{character. Output filename}
   \item{overwrite}{logical. If \code{TRUE}, \code{filename} is overwritten}
   \item{wopt}{list with named options for writing files as in \code{\link{writeRaster}}}
diff --git a/src/raster_methods.cpp b/src/raster_methods.cpp
index c63d1ede8..38b293d33 100644
--- a/src/raster_methods.cpp
+++ b/src/raster_methods.cpp
@@ -3439,11 +3439,12 @@ bool overlaps(const std::vector<unsigned>& r1, const std::vector<unsigned>& r2,
 SpatRaster SpatRasterCollection::mosaic(std::string fun, SpatOptions &opt) {
 
 	SpatRaster out;
-	std::vector<std::string> f {"first", "last", "sum", "mean", "median", "min", "max"};
+	std::vector<std::string> f {"first", "last", "sum", "mean", "median", "min", "max", "modal"};
 	if (std::find(f.begin(), f.end(), fun) == f.end()) {
 		out.setError("argument 'fun' is not a valid function name");
 		return out;
 	}
+	
 	if (fun == "first") {
 		return merge(true, true, opt);
 	}