diff --git a/snippets/r.snippets b/snippets/r.snippets
index c7ca5ac..bcc6733 100644
--- a/snippets/r.snippets
+++ b/snippets/r.snippets
@@ -25,7 +25,7 @@ snippet ei
 
 # functions
 snippet fun
-	${1:name} = function (${2:variables}) {
+	${1:name} <- function (${2:variables}) {
 		${0}
 	}
 snippet ret
@@ -39,7 +39,7 @@ snippet c
 snippet li
 	list(${0:items})
 snippet mat
-	matrix(${1:data}, nrow=${2:rows}, ncol=${0:cols})
+	matrix(${1:data}, nrow = ${2:rows}, ncol = ${0:cols})
 
 # apply functions
 snippet apply
@@ -100,7 +100,7 @@ snippet pl
 snippet ggp
 	ggplot(${1:data}, aes(${0:aesthetics}))
 snippet img
-	${1:(jpeg,bmp,png,tiff)}(filename="${2:filename}", width=${3}, height=${4}, unit="${5}")
+	${1:(jpeg,bmp,png,tiff)}(filename = '${2:filename}', width = ${3}, height = ${4}, unit = '${5}')
 	${0:plot}
 	dev.off()