Reversed condition for requiring rt
diff --git a/Makefile b/Makefile
index fab4e6a..7dc1451 100644
--- a/Makefile
+++ b/Makefile
@@ -342,7 +342,7 @@
 PC_REQUIRES_PRIVATE =
 PC_LIBS_PRIVATE = -lpthread
 PC_LIB = -lgpr
-ifeq ($(SYSTEM),Darwin)
+ifneq ($(SYSTEM),Darwin)
 PC_LIBS_PRIVATE += -lrt
 endif
 GPR_PC_FILE := $(PC_TEMPLATE)
diff --git a/templates/Makefile.template b/templates/Makefile.template
index cde6ad9..c6cedc9 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -367,7 +367,7 @@
 PC_REQUIRES_PRIVATE =
 PC_LIBS_PRIVATE = -lpthread
 PC_LIB = -lgpr
-ifeq ($(SYSTEM),Darwin)
+ifneq ($(SYSTEM),Darwin)
 PC_LIBS_PRIVATE += -lrt
 endif
 GPR_PC_FILE := $(PC_TEMPLATE)