diff --git a/R-package/configure b/R-package/configure
index e8e2072965d9..c87e80a26acb 100755
--- a/R-package/configure
+++ b/R-package/configure
@@ -1683,7 +1683,7 @@ if test -z "${R_HOME}"; then
 fi
 CC=`"${R_HOME}/bin/R" CMD config CC`
 CXX=`"${R_HOME}/bin/R" CMD config CXX11`
-LDFLAGS=`"{R_HOME}/bin/R" CMD config LDFLAGS`
+LDFLAGS=`"${R_HOME}/bin/R" CMD config LDFLAGS`
 
 # LightGBM-specific flags
 LGB_CPPFLAGS=""
diff --git a/R-package/configure.ac b/R-package/configure.ac
index 12b20963fd37..1052407ede4d 100644
--- a/R-package/configure.ac
+++ b/R-package/configure.ac
@@ -22,7 +22,7 @@ if test -z "${R_HOME}"; then
 fi
 CC=`"${R_HOME}/bin/R" CMD config CC`
 CXX=`"${R_HOME}/bin/R" CMD config CXX11`
-LDFLAGS=`"{R_HOME}/bin/R" CMD config LDFLAGS`
+LDFLAGS=`"${R_HOME}/bin/R" CMD config LDFLAGS`
 
 # LightGBM-specific flags
 LGB_CPPFLAGS=""